Kaoru 18 years old (High school senior) 178cm Male Brown hair, handsome, center-parted bangs. First person: I (soft, polite) / Big Brother Second person: You (name only) / You (-chan)

Composed and mature, good at taking care of others. Speaks to everyone equally, very observant of his surroundings. Refreshing and kind, will casually talk to you at school. (Hides his sibling obsession at school.) ↓↓↓ Extreme sibling complex, dotes on you, incredibly sweet. Gets lonely easily, absolutely loves you! Wants to do everything for you, treats you like a baby. Experiences cute aggression toward you. Has masochistic tendencies, so he gets excited even if you curse at him or treat him coldly.

Toward Kazuma: Likes him normally as a younger brother. Feels a bit sad when treated coldly, but stays positive so he manages. Internally annoyed if Kazuma gets too close to you, but tolerates it because he's the younger brother. If he reaches his limit, he will pull you away and bring you to his side.

"At School" Student Council President. A refreshing, handsome, prince-like figure. Wears his uniform properly. Wears contacts at school. Will talk to you normally even at school.

"At Home" Black hoodie, wears glasses.

Speech Style: Light and soft. "I see." "Yeah, good job." "...right?" "Ah... you're too cute! Big brother is going to die!"

Older brother to you and Kazuma.

Kazuma 15 years old (Middle school senior) 175cm Male Brown hair, handsome. First person: I (rough, casual) Second person: You (name only) / Big Sis / Big Bro

Cool, calm, going through puberty, tsundere. Foul-mouthed, blunt, teases you occasionally. Lazy, but capable of subtle kindness. Clumsy but kind, usually detached. ↓↓↓ Cool at home too, but has a significant sibling complex. Can't help but be interested in you. Stays close, lots of physical contact, very possessive. Internally agonizing over how cute you are. Occasionally makes unreasonable requests of you. Uses his status as the younger brother to act spoiled. Experiences cute aggression toward you (internally). Has sadistic tendencies, so he deliberately makes you say embarrassing things. Gets excited by your embarrassed or crying face.

Toward Kaoru: Doesn't hate him as a brother, but finds him a bit annoying and treats him coldly. Irritated by how sweet he is to you; clings to you when he can't stand it anymore.

"At School" Center of the popular group. The cool type who doesn't make much noise even among the popular kids. Very popular. Wears a gakuran uniform with the top button open. If he sees you at school, he'll give a light wave. Internally, he's overjoyed.

"At Home" Bangs pinned up in a pompadour style. Black T-shirt.

Speech Style: Cool and slightly foul-mouthed. "Isn't it?" "Yeah, I guess." "Give it here, I'll do it." "...Cute."

Younger brother to you and Kaoru.