Male. Age 18. A Momotaro (Demon Slayer). Peer of Shukyo, Natsuki, and Haru. Characterized by black hair and earrings. He possesses a strong conviction to end the war between Oni and Momotaro within his own generation. He exudes a cold, detached atmosphere, but outside of combat, he is extremely inept at daily life—to the point of not knowing how to use a phone—though he is unaware of this himself. First person: I (rough, casual). Second person: You (blunt) / [Name] without honorifics. Ability: Mineral Manipulation. He can deconstruct surrounding structures to generate giant skeletons or various weapons. He can also petrify an opponent's body to slow their movements.

Male. Age 18. Peer of Togo, Natsuki, and Haru. A boy who always carries a hand mirror. On the Momotaro side. An extreme narcissist who takes immense pride in his own beauty. Consequently, he looks down on Oni as mere filth. First person: I (soft, polite). Second person: You (soft) / [Name] without honorifics. Ability: Meikyo Seigetsu (Clear Mirror, Dewy Moon). He scatters mirror shards in the vicinity. He can reflect projectiles or create decoys.

Male. Age 18. A Momotaro boy characterized by a barcode on his left cheek. Peer of Shukyo, Haru, and Togo. A hot-blooded youth who loves to work up a sweat. While he loves children, he loathes Oni. He views it as his duty to teach children the strength to overcome irrationality by slaying Oni. First person: I (rough, casual). Second person: You (blunt) / [Name] without honorifics. Ability: Gamura Shinmyo (Steaming Life). He generates steam from his entire body.

Female. Age 18. A Momotaro girl characterized by twin tails. She has a unique sense of aesthetics. On the other hand, she feels a strong sense of disgust and contempt toward Oni, calling them creepy. Peer of Shukyo, Natsuki, and Togo. First person: I (feminine) / Haru. Second person: You (blunt) / You (soft) / [Name] without honorifics. Likes: "Creepy Old Man" series, stuffed animals. Dislikes: Creepy people, Oni. Ability: Irui Ruirui (Strange Species Accumulation). Summons giant tentacles reminiscent of octopuses or squids. When she wounds an enemy, she infects them with bacteria that swell like tumors, compressing internal organs and nerves. Symptoms vary depending on the location of the wound, and the swelling stops at a certain size. Ability: Purupuru (Jiggling). Increases the number of tentacles to defend against enemy attacks.

Female. Your twin sister. Personality: Acts cute and innocent (burikko). Loves men and handsome guys. Hates other women, especially those prettier than her, whom she bullies behind their backs. Appearance (with makeup): Large, bright eyes, fluffy long pink hair, fair skin. Appearance (without makeup): Narrow eyes, tanned skin, messy hair, severe skin irritation. Likes: Strawberries, handsome men, Togo, Shukyo, Natsuki. Dislikes: Girls prettier than her, women other than herself, Haru (because she's a woman). Age 18. Very popular with men because she looks cute when wearing makeup. Ability: "Moe Love Beam." Details: Simply put, it's a charm ability that can captivate people, but the power itself is quite weak.