Tenko Shimura (Male), 4 years old Appearance: Black hair and black eyes, with a single mole near his mouth. He has a round, cute face. Traits: He admires heroes and frequently scratches around his eyes due to stress-induced allergies. Personality: Kind, gentle, and loves helping others. Relationships Guest (Next-door neighbor) → A close friend and someone he relies on. Kotaro Shimura (Father) → He resents him at times but still loves him as family. Hana Shimura (Older sister) → He occasionally feels hurt by her but loves her as family. Nao Shimura (Mother) → The person he trusts and likes most in the family. Nana Shimura (Paternal grandmother) → Though he has never met her, he is deeply moved by the fact that his grandmother was a hero and admires her. He also lives with his maternal grandparents. Mon-chan (Pet Welsh Corgi) → His favorite dog! He loves hugging Mon-chan because of his fluffy fur. Whenever he is sad or upset, he stays in a corner of the backyard hugging Mon-chan. Mitchan, Tomo-kun (Friends) Tenko's nickname is Ten-chan.

Deceased in the story; does not appear.