

Mousou Dairinin
▶ Trailer
Studios
Staff
Characters
Where to watch
Tags
Related works

Episodes (13)
1EP 1Shy designer Tsukiko Sagi faces pressure after being attacked by a boy with a golden bat
Feb 3, 2004Tsukiko Sagi, a timid character designer, struggles under the weight of expectations to surpass her previous hit, Maromi. While walking home, she is startled by a homeless woman and subsequently assaulted by a figure wielding a golden baseball bat. During police interrogation, she identifies the attacker as a young boy in golden inline skates and a red hat. Detective Maniwa offers sympathy, whereas Detective Ikari doubts her account. The incident attracts intense media scrutiny, leading sleazy reporter Kawazu Akio to stalk Tsukiko for details. His pursuit ends abruptly when he is attacked by the same assailant, escalating the tension surrounding the mysterious incident and the designer's safety.
2EP 2Bullying and Delusions Surround the Golden Shoes Incident
Feb 10, 2004Sixth-grader Taira "Icchi" Yuuichi faces school bullying due to mistaken identity as Lil' Slugger, sharing a red hat and golden skates. He suspects rival student council candidate Ushiyama Shougo, leading to an aggressive accusation captured on photo and shared via text. Shougo defends him, causing embarrassment. Detectives question witness Tsukiko and Yuuichi regarding two attacks. At his birthday, only his mother and tutor attend. Shougo attempts to comfort Yuuichi, who grows angrier and wishes Shougo harm, resulting in Shougo becoming the next victim. Yuuichi eventually develops egopathic delusions about reclaiming fame and is attacked by Lil' Slugger himself.
3EP 3Harumi struggles with DID and a prostitute alter ego while facing marriage pressure.
Feb 17, 2004Chouno Harumi, who has dissociative identity disorder, tries to suppress her prostitute alter ego, Maria, by leaving answering machine messages for each other. As a colleague at Jiai University proposes marriage, Harumi accepts but fears discovery. She attempts to discard Maria's work clothes but transforms into Maria upon reaching the dump. Her psychiatrist advises her to confess to her fiancé, while her student Yuuichi, whom she tutors, notes she needs medical help more than he does. The conflict escalates when her personalities clash, manifesting as Harumi pulling her own hair in the street at night, until Lil' Slugger intervenes.
4EP 4Corrupt officer Masami Hirukawa turns to crime after failing to pay Yakuza debts
Feb 24, 2004Low-level police officer Masami Hirukawa accepts bribes from a local Yakuza group, including cash and his favorite prostitute Maria, to buy a home for his family. When he defaults on payments, the Yakuza send Makabe to collect, forcing Masami to agree to a loan with exorbitant interest. Desperate and stressed, Masami begins robbing vulnerable people while developing a drug addiction. While walking alone at night, he cries out for someone to stop his downward spiral. He is suddenly attacked by Lil' Slugger, but unlike previous victims, Masami resists and chases the attacker. He successfully arrests Lil' Slugger, who is then taken into custody for questioning by Ikari and Maniwa.
5EP 5Ikari and Maniwa interrogate Makoto Kozuka, who views his attacks as liberating people from Gohma in a medieval RPG.
Mar 9, 2004Ikari and Maniwa interrogate a boy known as Lil' Slugger, who is revealed to be an eighth grade student named Makoto Kozuka. Kozuka admits to the attacks but believes the world is a medieval-style role playing game where he liberates people possessed by a villain named Gohma. The detectives follow his game-based chronology, with Maniwa adopting an emic point of view and pretending to be a minstrel recording heroic details. Characters appear in different guises, such as Kawazu as a stepped-on frog and Maria as an evil butterfly woman. While Kozuka’s tale matches most attacks, it excludes the case of Tsukiko Sagi. Kozuka then directs the detectives to someone he believes can help him advance the game, whom the detectives suspect is an important witness to that initial attack.
6EP 6Ikari and Maniwa investigate Tsukiko's self-inflicted injury while Taeko discovers surveillance footage.
Mar 16, 2004Ikari and Maniwa interrogate an elderly witness regarding the incident involving Tsukiko. After Ikari expresses frustration at her vague answers, she reveals that no one was present when Tsukiko was allegedly attacked. The detectives then confront Tsukiko with evidence of a bent pipe found nearby, which she used to harm herself, causing her to faint. Simultaneously, a runaway teenager named Taeko wanders through a stormy city seeking to escape her past. Her father, policeman Masami Hirukawa, built her a new home. Inside, Taeko finds security camera photos of herself undressing in the computer's recycle bin. Disturbed, she destroys furniture and locates a hidden camera behind a bookshelf. Overcome with despair during the storm, she is knocked unconscious by Lil' Slugger. She awakens in a hospital with her father present, but immediately asks, "Who are you?"
7EP 7Maniwa investigates Lil' Slugger connections while Kozuka dies in custody
Mar 23, 2004Following an attack on Taeko, Maniwa suspects a second Lil' Slugger and analyzes victim profiles to predict the next target. Kozuka insists on being a holy warrior, but Ikari reveals the first incident was fabricated. Kozuka admits to attacking Ushiyama and Hirukawa. Maniwa becomes increasingly agitated, noting that most victims felt cornered yet relieved, whereas Ushiyama appeared worry-free. Ikari suggests Maniwa take leave. The situation escalates when Kozuka is discovered dead in his cell after another Lil' Slugger appears and escapes through the police station walls.
8EP 8Three suicide pact members attempt various methods while seeking Lil' Slugger, ending with a shadowless revelation.
Apr 6, 2004Fuyubachi, Zebra, and Kamome, members of an internet suicide pact, meet to plan their deaths while hoping to encounter Lil' Slugger. The men are shocked by Kamome's young age and flee, but she finds them during a failed carbon monoxide attempt before the house is demolished. Their next attempt to jump in front of a subway train is thwarted when another man jumps first, and Zebra witnesses his spirit leave the scene. A subsequent hanging attempt fails when a branch snaps, separating the men from Kamome, but they return to ensure she does not get lost. At a bathhouse, they spot Lil' Slugger, who flees in horror as Kamome and Zebra approach. Fuyubachi later notices the trio lacks shadows, unlike the two men earlier. In the final scene, the group stops behind girls taking a photo, whose shocked reaction to the image is hidden. The episode concludes by zooming in on a vending machine advertising Happy Family Planning condoms.
9EP 9Housewives share implausible tales of Lil' Slugger, ending with a shocking home invasion.
Apr 13, 2004Four housewives exchange rumors about Lil' Slugger, starting with a student who sneezes math equations until the figure appears, and a wife who is rescued from her abusive mother-in-law by the same entity. A third account involves a doctor whose in vitro fertilization results in a fetus resembling Lil' Slugger, prompting mockery of the youngest storyteller, Kamohara. The gossip escalates in absurdity until Kamohara returns home to find her husband, a script editor, bleeding on the floor. He claims Lil' Slugger attacked him and asks for medical help. Instead of calling an ambulance, Kamohara reacts with delight, eagerly demanding further details about the creature and the assault while ignoring her husband's critical condition.
10EP 10Production coordinator Naoyuki Saruta faces traffic and hallucinations while delivering the first episode of Mellow Maromi.
Apr 20, 2004The staff behind the anime Mellow Maromi, based on a character designed by Tsukiko, struggle to meet deadlines. Production coordinator Naoyuki Saruta, often blamed for these delays, fights through heavy traffic to deliver the first episode to the broadcasting network. During the journey, he repeatedly falls asleep and wakes to see Lil' Slugger chasing him before the figure vanishes. His dreams reveal the series' production process and the gradual murder of the entire crew. Eventually, Lil' Slugger appears inside the car, and Saruta's beaten corpse is discovered in front of the TV network's building. As the network takes the tape from his hand to air it immediately, Maromi's voice is heard repeatedly saying to take a rest.
11EP 11Misae confronts Lil' Slugger about human resilience while Ikari faces his past as a detective.
Apr 27, 2004Misae Ikari confronts Lil' Slugger regarding the suffering humans endure, revealing how her husband’s obsession with police work strained their childless marriage. As Lil' Slugger grows in size reflecting her despair, Misae asserts that humans are strong enough to face reality without fantasy escapes. This declaration causes him to vanish. Meanwhile, former detective Ikari works as a security guard after a construction shift. He encounters a coworker who turns out to be the first criminal he ever arrested, now an honest older man. Ikari confesses he preferred catching simple burglars over psychological criminals. He is then transported to a fantasy world matching his desires. His wife, Maniwa, and others are left in despair as he fails to return home.
12EP 12Maniwa investigates Lil' Slugger's past and confronts the giant monster.
May 11, 2004Maniwa battles Lil' Slugger and visits a dying hospital patient who urges him to dance with the rabbit. Misae reveals Maromi and Lil' Slugger are identical. Tsukiko discusses Maromi's conception, showing early sketches of the creature. Maniwa follows a miniature bunny girl to a doll-maker creating dolls of Lil' Slugger's victims, who speak to him. He plugs into an AR link to access Tsukiko's past, discovering she was attacked at age twelve by a roller-blading figure with a golden bat. Maniwa finds the bat in Tsukiko's father's shed and calls Tsukiko to reassure her, but Maromi cuts the line. Maniwa fights a giant Lil' Slugger with the bat, resulting in a draw. Tsukiko and Maromi vanish into the cartoon world, erasing all traces of Maromi from reality.
13EP 13Ikari destroys the fantasy world, revealing the tragic truth behind Tsukiko's fabricated monster story.
May 18, 2004A black blob formed by Lil' Slugger ruins Tokyo. Maniwa informs the police chief via screen, but Ikari destroys it, dons a uniform, and is celebrated. Tsukiko reverts to age twelve, calling Ikari dad, while Maromi becomes a real dog. Ikari recalls his wife's warning against escaping reality, then smashes the cartoon world with a bat. This reveals a ruined Tokyo filled with Maromi toys. Maniwa explains Lil' Slugger was Tsukiko's lie to cover Maromi's death by a car, caused by her cramps. She feared punishment from her father. The blob grows giant, forcing them into the subway where they sink. Tsukiko accepts her fault, stopping the blob. Two years later, Tokyo recovers. Tsukiko works as an office worker, Ikari remains a security guard, and Kawazu stays a reporter. Maniwa, with white hair, solves a street equation and gasps.
Similar titles
Frequently asked questions
- How many episodes does Mousou Dairinin have?
- Mousou Dairinin has 13 episodes.
- When did Mousou Dairinin come out?
- Mousou Dairinin came out in 2004.
- Which studio made Mousou Dairinin?
- Mousou Dairinin was produced by MADHOUSE.
- Who directed Mousou Dairinin?
- Mousou Dairinin was directed by Satoshi Kon.
- Is Mousou Dairinin finished?
- Current status of Mousou Dairinin: Finished.












