Мидзухо Асано

Кэйго Асано's formidable older sister. She constantly bosses her brother around (for example, sending him to the vending machine) and punishes him with a kick to the groin if he returns too slowly. She happily welcomes Ikkaku and Yumichika into the Asano household after Kейgo brings them home. She claims it's out of "sisterly kindness", but in reality, she's simply attracted to Ikkaku's bald head. To Kейgo's great misfortune, Mizuho loves talking about intimate topics and exposing her body in front of men she finds attractive.