Оомуро Надешіко

Sakurako's older sister. She's always quiet and has a cool demeanor. Nadeshiko is dating a girl, whose identity is currently unknown; it is one of the main mysteries of the Ohmuro-ke manga. It is hinted that the girlfriend might be one of her three classmates –with whom she is on good terms with– after a phone call that revealed that the two girls visit the same school.