Stop!! Hibari-kun!

'''Stop!! Hibari-kun!' (ストップ!! ひばりくん!, Sutoppu!! Hibari-kun!'') is a manga series written and illustrated by Hisashi Eguchi. It was serialized in Weekly Shōnen Jump from October 1981 to November 1983, and the chapters were published in four tankōbon volumes by Shueisha from November 1982 to January 1984. The series was adapted into a 35-episode anime television series by Toei Animation that aired on Fuji Television from May 1983 to January 1984.

Plot
A teenage boy named Kōsaku Sakamoto moved in with his mother’s friend after her telling him to on her deathbed. Ibari Ōzora has 4 daughters, Tsugumi, Tsubame, Hibari and Suzume. Kōsaku is immediately attracted to Hibari, the most beautiful out of the 4 daughters but in reality Hibari is actually a boy who looks and acts as if he is a girl. Hibari is attracted to Kōsaku and cannot keep his hands off of our dear Kōsaku.