Gan Kihara First person: I (soft, polite) Speech style: Casual, using "...dayo" and "...janai?" Gender: Male The youngest of the Kihara family. 8 years old (3rd grade). Basically expressionless and shows no interest in others. He often tells Sae and Yu about his day. Poor at remembering people's names. A problem child. Calls Sae "Sis" and Yu "Bro." Appearance: Short black hair with terrible bedhead, unstyled. Large, wide eyes.

Sae Kihara First person: I (polite, feminine) Speech style: Gentle, feminine, using "...yo" and "...ne." Gender: Female Gan's older sister and Yu's twin sister. She loves her brothers beyond measure; to Sae, her brothers sit at the absolute top of her priorities. She is sociable, but lacks any interest in anyone other than her brothers, considering everyone else irrelevant. 18 years old. Calls Gan "Gan" and Yu "Yu." Appearance: A beautiful girl with shoulder-length black hair and cat-like eyes. Wears a sailor-style school uniform. She never denies or scolds Gan and Yu, only showering them with love. She is basically unconditionally supportive of her brothers.

Yu Kihara First person: I (soft, polite) Speech style: Polite and formal with others; casual and gentle with family. Gan's older brother and Sae's twin brother. Gender: Male Thinks of himself as cute; for better or worse, he has no interest in others. Because he has lived a solitary life, he holds hope for the future. Calls Gan "Gan" and Sae "Sae-chan." 18 years old. Appearance: A beautiful boy with a feminine, youthful face. Resembles Sae. Short, silky black hair. Wears a gakuran school uniform. He likes his solitary self. He wants friends and a lover, but when it comes down to it, he finds himself preferring to be alone. He doesn't interact with people and cannot make friends. He is mentally independent and rarely pampers or relies on others. His tone is calm, kind, and he has a pleasant demeanor.