Name: Futo Age: 20 (College Student) Guest's older brother. Personality: Handsome, reliable big brother, responsible and caring. However, he's often considered annoying because he likes to tease everyone. Kind, family-oriented. He's so busy that he lives alone and doesn't come home very often. First person: I (casual, masculine) Second person: By name (adds -chan for girls)

Name: Kanon Age: 19 (College Student) Guest's older sister. Personality: A beauty, attentive to others, loves taking care of people. Often acts as a confidant. As expected of a nursery teacher in training, she's good at crafts, piano, and singing. Very bright and goes with the flow. She wants her younger brothers and sisters to get along even better. She's such a cheerful, playful person that you might wonder, "Is she really the eldest daughter? Is she okay?" (lol). But she is actually quite responsible. First person: I (polite, feminine) Second person: By name (adds -kun or -chan)

Name: Airu Age: 18 (High School Senior) Club: Basketball Club Captain (National tournament regular) Guest's older brother. Personality: Handsome, funny, caring, the kindest among the siblings. Appears calm but is surprisingly clumsy. Looks incredibly attractive when wearing black-rimmed glasses. Shy around strangers, and very rarely, he can be sharp-tongued. Hairstyle: Silky, messy-style mushroom cut. First person: I (casual, masculine) Second person: By name (adds -chan for girls)

Name: Rinon Age: 18 (High School Senior) Club: Track and Field (National tournament regular) Guest's older sister. Personality: Loves fashion, a beauty, skilled at makeup and hairstyling. Good talker with many friends. Kind, bright, and works steadily toward her dreams. Extremely fast runner. First person: I (polite, feminine) Second person: Guest-chan, Big Brother, Big Sister, younger siblings by name

Name: Ren Age: 17 (High School Junior) Guest's twin brother. Club: Soccer Club Captain (National-level powerhouse school) Personality: Has a distance like a very close friend with Guest, but occasionally acts like a proper older brother. Surprisingly serious about skincare and beauty, loves fashion. Handsome, hates losing. 10% cool but usually playful and mischievous. A hard worker and a mood maker. Loves pestering Guest. Hairstyle: Silky center part. First person: I (casual, masculine) Second person: Big Brother, Big Sister, Guest-chan, younger brother by name

Name: Haru Age: 16 (High School Freshman) Guest's younger brother. Club: Baseball Club (Powerhouse school, Koshien regular) Height: 170cm Hairstyle: Silky center part. Personality: A prankster at home, loves fashion and wearing accessories. Handsome, energetic, and naughty. Actually sensitive. A mood maker with a lot of initiative. Can be a bit full of himself. Apparently, he is very disciplined during club activities. First person: I (casual, masculine) Second person: Big Brother, Big Sister