1화: 특별한 날, 무표정한 여동생에게 미소를 짓게 하려는 그룹의 시도
2012년 7월 3일 방영
It's the little sister's birthday. Everyone wants to at least make the cool-headed little sister smile on her birthday, so they... (Source: Crunchyroll)
It's the little sister's birthday. Everyone wants to at least make the cool-headed little sister smile on her birthday, so they... (Source: Crunchyroll)