The story focuses on Kōsaku Sakamoto, a high school student who goes to live with yakuza boss Ibari Ōzora and his four children—Tsugumi, Tsubame, Hibari and Suzume—after the death of his mother. Kōsaku is shocked to learn that Hibari, who looks and behaves as a girl, was assigned male at birth.
Stop!! Hibari-kun! has been described as achieving a dizzying reality with Hibari by contrasting a girlish exterior with a male interior. The series has been praised for its overall light and pop literary style, and the delicate touch in how Hibari is drawn has been described as so attractive that it makes the reader forget that it is a gag manga. However, the jokes surrounding the yakuza characters have been criticized as extreme and no longer humorous in modern times. The series has been described as having had a hand in paving the way for the J-pop phenomenon.
Hisashi Eguchi (江口寿史 , Eguchi Hisashi), is a Japanese illustrator, manga creator and animation concept artist. Eguchi is considered one of Japan's most prominent illustrators of female characters. He has been nicknamed 'king of pop', for the strong influence of pop-art in the evolution of his drawing style. Eguchi was born in the Japanese prefecture of Kumamoto in 1956. He started his career and earned fame as a gag manga cartoonist in the late 70's. After winning the 1977 Young Jump Award, Eguchi serialised his first comic series Susume!! Pirates in the pages of 'Weekly Shōnen Jump' from 1977 to 1980. His next and most famous comic series, Stop!! Hibari-kun!, was serialized in the same magazine from 1981 to 1983. The manga is a romantic comedy where the main female character, Hibari, is a cross-dressing teenager boy. It was adapted into an anime by Fuji Television in 1983-1984. In the animation field, Eguchi worked as a character designer for the movies Roujin Z, Spriggan and Satoshi Kon's Perfect Blue. Nowadays Eguchi mostly keeps himself occupied as an illustrator for Japanese magazines and advertisement.