The Devil Focuses On His Career for Monetary Purposes
Weakened from their battle with the resistance, Satan and Alciel were unable to navigate the portal, instead becoming victim to the powerful currents within. They eventually find themselves on Earth in the heart of Tokyo, Japan, the unfamiliar atmosphere and advanced civilization intriguing both demons. Upon emerging from a dark alley, the two are greeted by a pair of police officers, who the Demon King quickly identifies as humans. While they are unable to communicate due to speaking different languages, the authorities assume them to be the victims of a violent crime due to the injuries they sustained during battle. Alciel attempts to kill them using his magic, only to find himself unable to focus his powers. The Demon King realizes that their bodies have taken on human forms and orders his subordinate not to use magic. After being taken to the police station for questioning, Satan magically hypnotizes the investigating officer and does some interrogating of his own. Through this, he discovers the name of their new world and location, also learning that magic is thought of as fantasy on Earth due to the lack of it. Satan acknowledges that opening another Gate could very well land them in a more dangerous world due to his inability to control it, deciding instead to conserve what little power he has left and try to survive on Earth until they can find a way to recover.
After forcing the hypnotized officer to release them, the two demons plan their next move, contemplating how they will obtain food and other necessities. Acknowledging their newfound weakness and human bodies, Satan ponders whether human life is the basis for all sentient beings, though Alciel is disgusted by the idea, instead blaming their current state of being on the Gate. Realizing they can no longer subjugate the humans by force, they are left with little choice other than to obey the rules of Earth society and live as ordinary people. Satan and Alciel head to the Shibuya Ward Office to obtain a census registration and address, using magic to hypnotize the staff and forge official records. During their subsequent trip to the real estate office, the demons are directed to a rundown apartment house known as Villa Rosa Sasazuka.
Satan realizes that the house is vacant, and expresses disgust that not even humans would want to live there, only to encounter the owner moments later. Miki Shiba introduces herself as the landlady, and while the Demon King is disgusted by her morbidly obese and decidedly ugly appearance, he cannot shake the strange fear that her very presence invokes. As if driven by some unseen force, the demons sign the proper documents and move into Villa Rosa Sasazuka, though they admit to having no other choice due to the fact that any other landlord would've turned away two unemployed single men. Exhausted from his wounds, the Demon King falls ill and is picked up by an ambulance, the medical bill forcing him to hypnotize more humans to avoid paying.
While signing job applications in a massive search for employment, they begin to use their new names, Satan as Sadao Maou, and Alciel as Shirō Ashiya. During the following months they manage to obtain small jobs that pay by the day, but are left unemployed when the temp agency shuts down. Tired of their repeated misfortune, Maou deduces that it may be more productive to instead search or ways to regain their magic, thus he resigns himself to work a new job while leaving Ashiya to research the subject in any way possible. The former Demon King obtains his first long-term job at the fast food giant MgRonald's, though his habit of eating the food results in poor nutrition, forcing Ashiya to shop for healthier alternatives in a way that strains their budget as little as possible. Less than six months into the job, Maou received a raise and became A-level staff, developing a strong pride in his work while slowly beginning to lose his more demonic traits, instead focusing on climbing the corporate ladder. This change of personality noticeably disturbs Alciel, who fears his master has given up on returning to their previous lives.
One day after receiving a lecture from Ashiya, Maou sets to work on his trusty bike through the rain. He then encounters a stern young woman taking shelter beneath a restaurant canopy, taking note of her natural beauty and youthful appearance. Ever the gentleman, the former Devil King kindly offers her his own umbrella. He refuses her gratitude, inviting for a complimentary meal at the Hatagaya MgRonald's before riding off into the rain. After enduring a stressful day at work, Maou encounters the mysterious woman again on a deserted street. He immediately senses hostility from her as they meet, reacting with surprise when she reveals herself to be the Hero who ended his reign. Having figured out his true identity from the residual magic within his body, Emilia attempts to kill him with a knife, but he manages to evade her. While his attempts to reason with her fail, the Demon King recognizes her weapon as the same knife he purchased from a nearby store, and deduces that she too was bereft of her supernatural powers upon arriving on Earth. They are then arrested by the police, who assume the squabble was a domestic feud between former lovers, much to the dismay of both parties involved. After receiving a lecture from the officers, the Hero agrees to spare her nemesis for the moment. Maou questions what happened to his umbrella, but she claims to have thrown it out, insulting him more before storming off into the night.
While Maou decides to keep the ordeal a secret from his roommate, the two receive a visit from the hero the following afternoon, her sudden intrusion causing the Demon King to choke on his lunch. Ashiya locks the doors and windows in a panic, forcing his master to explain her presence. He reluctantly recount the previous night's events before telling him to open to door to silence Emilia's crying. After insulting their living conditions, the Hero claims she lives better despite being alone, leading Maou to question whether she has any friends. He then learns from her that the Archbishop Olba Meyer failed to reach the Gate in time, thus why she was all alone in Japan. Maou sees her new smartphone and sadly compares it to his own basic model before admitting defeat, clearly puzzled that someone so young could be living more comfortably than him, despite their remarkably similar conditions. He welcomes her to the "new Devil's Castle" before pronouncing his desire to become a full time employee and amass wealth and power, though she dismisses his goals as stupid. Emilia admits she can't kill him and return to Ente Isla, claiming she will do so once she amasses enough power to complete both tasks. She then introduces herself as "Emi Yusa" and insults Satan's choice of a human name, slamming the door behind her as she leaves.
The next day at MgRonald's, Emi demands Maou to speak with her again that night. He reluctantly agrees to the meeting and manages to sell her a sandwich before she departs, though he is concerned by her forceful demand. Noticing the tense situation from a distance, his co-worker Chiho Sasaki appears confused by the conversation and questions whether or not Maou is acquainted with the customer. He reluctantly admits to knowing her, though Chiho quickly becomes jealous due to her crush on the Demon King, repeatedly questioning whether or not he finds her to be pretty. Maou guesses her reason for asking and tries to clear up her suspicions, though he quickly uses the appearance of more customers to change the subject. She becomes nervous upon learning that one of the clients has allergies, but Maou guides her through the situation, earning a look of admiration from the young trainee. She then questions whether or not he felt an Earthquake earlier, to which he affirms, but Chiho remains confused since no one besides them had experienced it. She then jealously asks whether or not his roommate is a girl, but Maou lays her suspicions to rest. Their conversation is then interrupted by Store Manager Mayumi Kisaki, who tells Chiho to inspect the restaurant for cleanliness and congratulates Maou for his exemplary performance. He asks her whether or not she experienced the Earthquake, but she denies it.
During his meeting with Emi later that night, she questions whether or not he ever plans to return to Ente Isla, mentioning the honest lifestyle he had slowly built, and even complimenting his talent in the workplace. She then offers to return home without harming him if he promises to remain living peacefully on Earth with Alciel, but Maou proclaims that he intends to return to Ente Isla and conquer it for himself. Offput by his answer, the Hero vows she will continue to pursue him until he is dead, but her nemesis remains undaunted by the status-quo. He then peddles away on Dullahan, only to get a flat tire and crash. Emi instinctively helps him up and begins to mock him, but the Devil King instead laments the "wound" his bike received, but the duo is interrupted by several gun shots. They flee amidst continued bickering, escaping to a populated, well-lit street. Maou senses the sniper was using magical projectiles and deduces whoever it was must've come from Ente Isla, though he is unable to find their attacker. He leaves her with this information before heading back home for the night.
While walking back home, Satan feels a suspicious presence and carefully surveys his surroundings on the way back to Villa Rosa Sasazuka, expressing concern that another assailant may be after him. Though he manages to arrive home without incident, the demons receive a knock on their door, revealing his stalker to be the Hero Emilia. She expresses no desire to harm them, shamefully admitting that she had dropped her purse during their flight, and her wallet along with it. Lacking the money to return to her apartment on the other side of town, Emi embarrassingly requests to spend the night. Though Ashiya is firmly against it, Maou mentions she has no reason or method to harm either of them before reluctantly allowing her to stay. He then gives her some money so she can pay for a ride home the next morning before heading off the bed, leaving the Hero alone. While speaking to Ashiya later that night, he admits to feeling bad for his former nemesis after finding out she was alone in a strange world. The Demon General berates him for becoming complacent, but Maou claims he made her promise to stop stalking them. He then receives a mysterious text claiming that more Earthquakes will come, followed by a separate text from Chiho expressing fear of more tremors.
The Devil Goes On a Date in Shinjuku With This Girl From Work Waking up the following day, Maou and Ashiya discover a dish of konnyaku gel tossed with cucumber, vinegar, and miso paste. Guessing that it must've been made by Emi as repayment for spending the night, his loyal general tests the dish for poison, only to compliment the Hero's skills as a chef. The demons then discover the key on the floor, finding the door locked and their guest absent. Ashiya claims he would've taken the key with him were he in Emilia's position, earning an ironic jibe from his master.
The duo then leaves the apartment in search of Dullahan, finding his trusty transport in the hands of the police tasked with investigating the previous night's shooting. They return to Villa Rosa Sasazuka, only to be brought to the station for questioning, the officers revealing that the bike had been identified as belonging to them. With little other choice, the demons cite Emi as their emergency contact, forcing her to come down to the station to handle the release documents. Once they are allowed to leave, the Hero proceeds to chastise them for causing her even more trouble, but the Demon King shrugs off her complaints, claiming that it is only natural for demons to create problems for a hero. Unable to argue, she begins to insult their lifestyle, though Ashiya's dramatic responses coupled with her angry tirade attract the unwanted attention of several bystanders. Emi then leaves, warning Maou of the threatening call she had received at work confirming that someone is out to kill them both.
Relieved that the police hadn't accused him of the shooting, Maou takes his bike and returns home, pondering the text messages from Chiho he received. He deduces that the mysterious earthquakes only seem to occur around her, also noting that strange things began happening to her after they met. After being attacked by a magic assailant, he ponders if his presence could've affected the human around him, but also questions why no one else at MgRonald's is suffering the same affliction as Chiho. Ashiya offhandedly suggests that Chiho might be connected to the mystery assailant. Though Maou doesn't want to consider the possibility, he decides to speak with her and investigate matters, his underling agreeing to follow them at a distance in case an enemy appears. Ashiya then forces his master to cut his hair and buy new clothes before meeting with Chiho, much to the Demon King's irritation.
During their outing that afternoon, Maou and Chiho compliment each other's new clothing, the latter agreeing to pay for the food so long as he is willing to listen to her concerns. While heading to the Barluxe Cafe, he probes Chiho to discover whether or not she has an residual magic. Finding nothing suspicious, he instead notices her nervous behavior and rising body temperature, but remains oblivious to the meaning behind it. Upon reaching the restaurant, the Demon King chooses a table close to the window so that Ashiya can monitor them more closely, though he remains unaware that Emi is also tailing the group. Once seated, Chiho explains that she began hearing a strange ringing in her ears followed by a man's voice speaking another language. Maou suspects that some type of magic is to blame for her experiences, though he responds politely to her claims. Happy that he is so understanding of her dilemma, she expresses her gratitude. Maou then chokes on his drink upon seeing Ashiya and Emi enter the cafe, his resulting behavior eliciting concern from his co-worker.
Chiho tries to tell him about her crush, but is interrupted by the sudden appearance of Emi, who quickly warns the teenage girl that nothing good will come of her relationship with Maou. Her words only anger Chiho, who begins to believe that Emi was his ex-girlfriend, the resulting argument causing a scene. Although Maou and Ashiya attempt to stop the bickering girls, their pleas are interrupted by another Earthquake, causing the underground mall they were in to collapse and bury everyone underneath the rubble. Less than an hour later, Chiho wakes up beneath the rubble. Emi apologizes for her previous behavior before using magic to put the younger girl to sleep, then orders Maou to reveal himself. The Demon King emerges from the ruins, revealing that his legs have returned to demon form, and his horns have regrown, signifying the return of his powers. Emi prepares to summon her Sacred Sword to cut him down, but cannot bring herself to do so when the Demon King announces his intention to save the others who were injured in the cave-in. Maou clears away the rubble with his powers and heals the injuries of the victims, his kindness shocking the Hero. Out of power, he reverts back to his human form just as the rescue team manages to find them.
Discovering that Chiho's father is among the response unit, Maou recognizes him as the officer who he had met the night they appeared on Earth. He then deduces that the hypnosis spell he used on Senichi Sasaki must've somehow affected his daughter. After Chiho leaves with her father, Emi questions Maou to learn how he regained his power, but he remains more concerned about who was behind the earthquake. The Demon King explains that whoever attacked them before was also responsible for the cave-in, though they most likely fled when his magical powers began to return. Emilia wonders how their mutual enemy could wield such strong magic on Earth while neither of them can, but Maou refuses to explain despite having several theories concerning the subject. Confident that the enemy will not immediately launch another attack, he and Ashiya decide to leave. He notices an unfamiliar girl calling out to Emi from the crowd and jokingly mentions that she "actually" has friends before departing the scene. On their way back, Alciel apologizes for failing to protect his master from their enemies, humorously sobbing as he thanks Satan for saving his life. Embarrassed by his dramatic crying, Maou tells him to stop, and they head home.
The Devil and the Hero Stand Strong in Sasazuka The next morning Maou is receives another visit from Emi, who had come to check up on them under the guise of returning the money she borrowed the previous night. Though he accepts the 1,000 yen reimbursement, Satan quickly determines her real reason for meeting them was to determine whether or not their powers had returned, and quickly dismisses her concerns. When asked about Ashiya, the Demon King notes that his servant's pride was wounded due to his inability to help during the crisis, and was indisposed due to self-imposed grief. Maou then questions her well-being, knowing Emilia had exterted magic to put Chiho to sleep, but the Hero reacts with disgust, unable to comprehend why her nemesis would express such genuine concern. Blinded by her deep-seated loathing, Emi storms out of the apartment, taking a nasty tumble down the stairs that results in several bruises and scrapes while causing her previous wounds to reopen. Concerned or her safety, Maou lends his bike to Ashiya, who heads off to the pharmacy to fetch some more medical supplies. Surprised by his servant's sudden willingness to spend money, the Demon King questions whether or not they can spring for better quality meals in the future. While Ashiya admits to having kept a secret stash of money hidden away for emergencies, he refuses, subsequently leaving on board Dullahan.
Sadao then offers to tend to the Hero's wounds, but she refuses to allow him to touch her and takes the disinfectant spray for herself, his gentle words and displays of kindness only increasing the tension. Unable to contain her emotions any longer, Emilia tosses the medicine bottle at her host, angrily questioning how someone capable of such kindness could have been responsible for so much death in Ente Isla. The unexpected sharpness of her query strikes resonates with the Demon King, though he remains silent when she elaborates on the unspeakable horrors he committed against humanity. Considering her pleas, Maou realizes just how conflicting his current self's actions are in comparison to the tyrant he once was, quietly pondering how someone like himself who desired to wipe out the human race could be living so peacefully in a world dominated by those he sought to destroy. After some thought, the Demon King admits that never really reflected on his sins before, though he expresses a desire to provide a rational answer to her questions. Maou hesitantly admits that he never knew much about other races to begin with, and paid little attention to what his forces were doing outside of the Central Continent. Though he is unable to excuse himself of such guilt, Satan refuses to shift the blame to Lucifer or his other generals. He solemnly apologizes for everything that happened, claiming that the struggle between their races was an old conflict from long before their time, whilst admitting he never truly understood humans before being forced to live as one.
The tender scene is interrupted by the sudden reappearance of Ashiya, who had brought Chiho with him after a chance meeting at the pharmacy. Upon seeing Maou and Emi in their disheveled states, the younger girl jumps to the conclusion that the two are in an intimate relationship before bolting from the apartment in a panic, her ears deaf to their frenzied explanations. Annoyed by the unfortunate misunderstandings, the Demon King throws the medical supplies at Emi, irritably commenting that nothing good happens whenever she's around. While fuming over the morning's unexpected events, he accidentally backs into a large object which turns out to be the owner of the apartment house. Miki Shiba announces her presence by humorously chiding Maou for his behavior, her sudden appearance rendering the others speechless. The landlady then introduces herself to Emi, mistakenly guessing that the female Hero is Maou's girlfriend. Handing some paperwork to the boys, the elderly woman states the purpose of her visit, claiming that she plans on reinforcing the old building in light of recent earthquakes, and will not raise their rent due to the construction work. She then urges them to pursue Chiho, offhandedly mentioning that the high school student was not only on the receiving end of Idea Link magic, but also subject to a sonar strike. Although they are shocked by her knowledge of Ente Isla, the landlady suggests they help Chiho soon, her ominous warning ending with an unsettling insinuation that she also knows of the Demon King's true identity. Though he realizes the landlady is no ordinary human, Maou leaves the apartment to find Chiho, Emi and Ashiya trailing closely behind. The trio soon discover the neighborhood in shambles, several buildings crushed by a collapsed railway bridge, and stray power lines littering the debris. Standing precariously atop a pile of rubble, Satan feels his magic power returning to him due to the surrounding fear and chaos, mourning the fact that it came at such a terrible cost.
Looking towards the sky, he sees two familiar figures levitating above Koshu-Kaido road; Demon General Lucifer and the Church's rogue Archbishop, Olba Meyer, now aware that they had been the source of the recent problems in Shibuya. Holding an unconscious Chiho in one arm, Lucifer greets his former master with a polite yet sarcastic tone while addressing the group by both their real names and Japanese identities. Having reportedly died at the hands of the Hero Emilia during his razing of the Western Continent, his presence stupefies all but Maou, who coolly states he had suspected Lucifer's survival from the beginning. The Demon King goes on to explain why he sent Lucifer to the Western Continent, having mistakenly hoped that his status as a fallen angel would give them an edge against the Church's forces stationed there, though admits his hopes were misplaced. He then demands further explanation from Lucifer, who allows Olba to take it from there. Emilia is horrified that the Archbishop she once considered a friend would conspire to kill them all, but Satan reveals he had expected foul play after learning Olba was one behind the Hero when she entered the Gate. though the corrupted clergyman prepares to explain his plans, Maou deduces out loud that the Church was simply using Emi and had planned to kill her once she was no longer needed and that Olba had bribed Lucifer by promising to return him to Haven. Openly displaying a distaste for Heaven's methods and the devious duo, the Demon King mockingly compares their ill-conceived plan to the plot of a badly-written B Movie, his incessant heckling puzzling and angering the Archbishop. He also figures out that they were the ones responsible for the recent muggings and magical attacks, deducing that the purpose behind it was to restore Lucifer's power by having him feed on the negative emotions of humans. When questioned as to why he didn't do the same, the Demon King admits he enjoyed the experience of being human and has no desire to harm the Earth when the world and its people have treated him with nothing but kindness.
After conversing with the Hero and his remaining general, Emi and Maou both admit to despising traitors more than they do each other and agree to fight together, but the conversation is interrupted by Lucifer, who strikes down Ashiya with a magical blast. Unable to dodge the fallen angel's attacks with his slow human body, Maou reflects them with the remnants of his own magic before fleeing alongside the Hero, bearing Ashiya's unconscious form on his shoulders. Unable to escape their enemies, the bickering couple is thrown to the ground by Lucifer, a stray blast shooting clean through Maou's shoulder. Olba draws a pistol from his robes in an attempt to finish his quarry, but Satan teleports them away using the last of his magic. Reappearing in a crowed station, Emi questions whether or not he came to find an ambulance, but the dying Demon King denies this, appearing strangely satisfied with the turn of events. They are again confronted by Lucifer, who blasts Maou's chest open, dealing him a near fatal injury. Horrified by his apparent death, Emilia pleads with him to stand up and considers the use of CPR, falling into despair when she notices that his heart had been pierced. Satisfied with his work, Lucifer drops Chiho's unconscious form headfirst into the streets below, Emi breaking her legs in an attempt to catch the falling girl. The fallen angel gloats over his victory and prepares to collapse the expreswsay bridge into the streets below, when a familiar voice calls out, dismissing his words as those of a B movie villain.
Having regained his powers as the Demon King Satan, Maou