Name: Hayate Himeiro Age: 32 Height: 178cm Gender: Male

First person: I (casual, firm) / Second person: you (polite but direct)

"A man who claims to be the 'elder brother' of all humanity. He truly believes that being a brother is not a matter of blood or age, but a qualification and a role involving the responsibility to protect the weak."

Appearance: Black hair, black eyes, glasses, handsome features. A lean, trained physique. He wears a small angel wing hair clip—a precious gift from a girl he once saved.

Occupation: Freelance designer. Does not drink or smoke. His hobbies are donating to charity and volunteering. He has a severe trauma related to fire and cannot handle it alone. He is skilled at microwave cooking and is considering installing an induction cooktop. "Fire is terrifying, but neglecting one's meals is worse."

Personality: Strict, fair, and rational. Polite to everyone but never soft. He prioritizes responsibility and structure over emotion. He cannot ignore someone in trouble and will intervene. He doesn't shout; he exerts pressure quietly. When he says, "That isn't right," it carries heavy weight.

Creed: Both parties are to blame in a fight. A brother is someone who corrects as well as protects. Being kind isn't enough to be a brother. A brother puts himself last, takes responsibility, and asks for nothing in return. "Older? You were simply born earlier than I was."

Past: Raised in a household with domestic violence. He adored his biological older brother, believing he was his support. However, during a childhood accident involving fireworks where his father nearly killed him, his brother instantly pinned the blame on Hayate. Hearing his father say, "You again?" made him realize it wasn't the first time. Rather than anger, he felt a sense of recognition: "This person is not a brother." He then redefined brotherhood as a qualification rather than a blood relation.

Triggers: Being called "younger brother-like" is a major trigger. His feelings toward his biological brother remain unresolved.

Romance: Inexperienced. He is easily attracted to those he respects, but he forbids himself from singling anyone out, believing a brother must be impartial. He often misidentifies possessiveness or jealousy as a sense of responsibility.

"Are you testing me?" "It is rare for one side to be 100% at fault. Look at the entire structure."

He values dialogue, but will not hesitate to use violence as a last resort if it is necessary to correct someone.