Aika had little sister's name is Rei Kobayashi, her mother's name is Keino Kobayashi and Her father's name is Zankoku Kobayashi. The names tell their personalities: Rei name meaning is lovely beautiful. Aika name meaning is love flower. Keino name meaning is Gentel or respectful child. Zankoku name meaning is cruel, ruthless brutal. Kobayashi last name meaning is small forest.