Midorikawa Kouta (緑川 こうた Midorikawa Kōta?) is the sixth sibling in the group. He has short, spiky brown hair and brown eyes. He seems to love soft toys and so takes an instant liking to Candy when he spots her in Miyuki's bag. He can only use simple words such as "Mommy" (Okaa-tan). One of Nao’s siblings that makes multiple appearances throughout the series and episodes.