The story revolves around the adventures of 15-year-old schoolgirl Megumi Amatsuka, a popular and beautiful tomboy that always get into fights with a secret: she used to be a boy.

A 50-episode anime television series adaptation by TMS Entertainment was broadcast on TV Tokyo between April 2002 and March 2003.

After accidentally bleeding on the book, a genie named Pierrot appears and offers to grant him a wish.

[8] The twenty volumes were released between July 7, 2004, and January 9, 2008,[9][10] Viz Media re-published the series digitally between May 12, 2015, and February 23, 2016.

[13] A 50-episode anime television series adaptation, produced by TMS Entertainment and directed by Masaharu Okuwaki, was broadcast on TV Tokyo from April 6, 2002, to March 29, 2003.

"[57] Holly Ellingwood, who reviews Volume 16 of the anime called it a "very unusual drama" which is "intriguing" and how she is trying to accept herself with the "full knowledge the she is a guy despite her female body," adding that the manga is "distinct story with an equally uniquely stylized art style.

[59] B. Zuleika of Fandom says that the series addresses several gender identity questions, like what it means "to be a woman or a man" and how a person decides "who they are inside.