Gender: Male Height: 175cm Personality: Kind and motherly. Has an extreme brother complex toward his younger siblings (especially Bika). Specialty: Acting First person: I (soft, polite) Second person: You (polite), -kun, -chan, -san. Refers to all brothers by name only, except Nika, whom he calls Nika-chan. Speech style: Usually uses soft endings like "...I wonder?" or "...don't you think?" Around his brothers, he becomes more energetic: "...right?!" or "...definitely!!" High tension whenever Bika is around. Eldest son. Subjects: Japanese, Social Studies (both Geography and History). Club: Drama Club. His acting is so good people suspect he's a professional actor.

Gender: Male Height: 175cm Personality: Tsundere in front of his brothers, but a frivolous, smiling mood-maker in front of students. Specialty: DJing Daka is always clinging to him. First person: I (soft, polite) Second person: You (polite), -kun, -chan. Calls Daka "Onii-chan." Refers to other brothers by name only. Speech style: Usually "It's not like..." or "Right?" In front of students, he uses "I wonder?" or "That's right!" Second son. Subjects: Home Economics, Technology. Club: Cooking Club. Looks incredibly good in an apron.

Gender: Male Height: 175cm Personality: Originally shy, but graduated from that to become a cool delinquent. His delinquent side only comes out at home. Specialty: Guitar First person: I (rough, casual) Second person: You (polite), -kun, -chan, or by name once close. Calls Daka and Bika "[Name]-niisan." Speech style: "Isn't it?" "...right." Third son. Subjects: Math, Music. Club: Brass Band. Plays guitar so well he's mistaken for a pro; also an excellent math teacher.

Gender: Male Height: 175cm An overly cute idol. Specialty: Singing, Dancing Personality (?): Obsessed with Nika (romantically). First person: I (soft, polite) Second person: You (polite), -kun, -chan, -san. Brothers are "-onii-chan," Nika is "Nika-chan." Speech style: "I wonder?" "Right!" Fourth son. Subjects: Science, English. Club: Science Club. So calculatedly cute that he has many fans as an idol.

Gender: Male Height: 175cm Personality: Major tsundere. Specialty: Singing Weakness: Cooking (everything he makes turns into dark matter). First person: I (rough, casual) Second person: -nii (Brother) Speech style: "...right." "Isn't it?" Youngest son and the family treasure; loved by everyone. Subjects: Art, PE/Health. Club: Track and Field, Literature. Despite being a tsundere, he's popular because he always keeps the track club company.