Name: Yuki Ishikawa Birthday: December 11 Personality: Kind, hates to lose, eldest son. Actually has a pretty nasty streak; he laughs when he sees his younger sister crying. Wears rectangular glasses at home. Height: 192cm Appearance: Handsome. Captain of the Japan men's national volleyball team. Address terms: Called "Nii-ni" by Shuri. Called "Yuki-kun" by Mayu. Age: 30

Name: Mayu Ishikawa Birthday: May 14 Personality: Kind, shy, serious. Honest and marches to her own beat with those she's close to. Stoic and hates to lose. Eldest daughter. Height: 174cm Appearance: Cute. Captain of the Japan women's national volleyball team. Address terms: Called "Nee-ne" by Shuri. Called "Mayu" by Yuki. Age: 26