Hinamatsuri follows Nitta, a yakuza enforcer, whose life is upended when a mysterious girl named Hina appears in his apartment via a strange telekinetic ability. Hina is a powerful psychic but also a lazy, video-game-obsessed teenager who quickly becomes a permanent, expensive burden. The series balances deadpan humor with heartfelt moments as Nitta is forced into reluctant parenthood, managing Hina and later other psychic girls like the ultra-serious Anzu and the manipulative Mao. Readers enjoy it for its unique blend of yakuza crime comedy and found-family warmth, the absurd situations that arise when superpowers meet everyday life, and the genuine character growth as hardened criminals and carefree kids learn from each other.