Kill Blue Episode 3: Wipe Your Own Butt

Ogami Juzo, a man in a child's body, sits trapped in a junior high math class, utterly overwhelmed by basic algebra. His internal monologue reveals a deep humiliation, a former assassin defeated by coefficients and variables. At home, Shinji notices his distress, but when Juzo seeks help from Eli, she flatly refuses, citing her own exhaustion and urging him to solve his problems independently. Left alone, Juzo faces the crushing weight of his pride versus his inability to grasp simple equations.

Slumped over textbooks in the school library, Juzo is found asleep, pushing himself to the point of exhaustion. Shiraishi Ryo, a classmate, gently wakes him and quickly identifies Juzo's academic gaps stem from elementary basics. A montage follows, showing Ryo's patient tutoring transforming Juzo's understanding, culminating in a perfect score on a math quiz. Overcome with relief and gratitude, Juzo breaks down in tears, declaring Ryo his 'Master' in a display of intense, borderline obsessive appreciation.

During a celebratory meal, Juzo praises Ryo's clear goals, prompting Ryo to nervously reveal his dream: to become a doctor. He explains this ambition was born from witnessing his grandmother's painful illness after his mother's early death. Juzo is deeply moved by the story, his eyes welling up with tears once more at Ryo's noble and heartfelt motivation. He recognizes a profound goodness in his young friend, solidifying their growing bond.

A rude man from the restaurant, whom Juzo accidentally bumped earlier, begins mocking Ryo's dream, provoking a cold, dangerous glint in Juzo's eyes. Juzo offers to use violence, but Ryo calmly confronts the man, arguing that cynicism should not overshadow genuine effort. The man, shamed by other customers, retreats, but later, in a fit of manic fury, attacks the boys on a bridge with a bicycle. Juzo, with the lightning precision of his former life, jams a pair of scissors into the bike's wheel, sending the man sprawling into the river, his 'precious laptop' following soon after. Juzo feigns innocence to a bewildered Ryo.

A melancholic flashback briefly shows the adult Juzo in his former life, a tired assassin ignoring a call from 'BOSS,' a glimpse of emotional detachment softened by a rare, gentle gesture towards Kozue. In the present, Juzo wakes to the chaos of his messy bedroom, filled with books and discarded notes from his studies. Shinji is horrified, loudly complaining about the 'trash room' and scolding Juzo's outdated belief that cleaning is not 'a man's job.' The comedic bickering highlights Juzo's slow, often clumsy, adaptation to ordinary life.

At school, Juzo navigates the vibrant chaos of club recruitment, wary of activities that might expose his extraordinary abilities. When a baseball rolls his way, he instinctively hurls it back with terrifying force, obliterating the catcher's glove. Realizing his accidental display of superhuman strength, he quickly vanishes into the crowd, seeking anonymity. Later, discussing club options with Ryo, who chooses Kendo, Juzo actively searches for a low-profile activity where his true nature won't be a constant liability.

Juzo's gaze falls on a Home Economics club poster, initially scoffing at the thought of cooking and sewing. Suddenly, Shiraishi Tenma, Ryo's boisterous older sister and the club president, grabs him in a friendly but aggressive hold. She delivers a passionate, blunt monologue on the importance of self-sufficiency, challenging him to a trial session that afternoon. Tenma proposes a strange bet: if he finds it boring, she leaves him alone, but if he finds it fun, he must join and 'take care of her.' Juzo, confident in his disinterest, reluctantly agrees, then applies his hitman-like focus to the cooking tasks.

After meticulously preparing onigiri and miso soup, Juzo feigns indifference, claiming the food was 'just normal' and he had won Tenma's bet. That evening, Shinji teases him about his new 'hobby.' Later, Eli calls, genuinely praising his cooking, mentioning that Kozue loved it. Kozue herself takes the phone, enthusiastically thanking her 'papa' for the best onigiri ever. Hearing the child's pure joy, Juzo is overwhelmed, realizing the profound satisfaction of cooking for others and understanding he had, in fact, lost Tenma's bet. He finds a new, warm sense of purpose and belonging, returning to his studies with a lighter heart.

The next morning, Juzo formally hands his club application to a delighted Tenma, who welcomes him with a bone-jarring slap on the back. Walking the school hallway, Juzo spots Mitsuoka Noren, his target, and approaches her, feeling a mix of curiosity and apprehension. To his astonishment, Noren reveals she is also joining the Home Economics club, application in hand. She explains her desire to learn new skills and sternly warns him not to act familiar with her in public, leaving Juzo utterly confused by the strange coincidence and the terms of his new mission.

At home, Shinji stares at his laptop screen, his face glowing with the blue light of a shocking discovery. He urgently calls Juzo, his voice trembling with a desperate urgency, informing him of a massive news leak regarding the Mitsuoka family. The revelation: a high-level news article declares that whoever becomes Mitsuoka Noren's fiancé will be formally designated as the next president of Mitsuoka Pharmaceutical. This sudden, high-stakes declaration transforms Juzo's intelligence mission into something far more personal and complex, effectively turning Noren into a pawn in a corporate power struggle.