Cheeky Angel(2002)

Cheeky Angel is a comedy-romance anime series following Megumi Amatsuka, a spirited 15-year-old schoolgirl with a fighting spirit and a secret past. Once a boy, Megumi now navigates high school life as a popular tomboy, getting into scrapes and romantic entanglements while keeping her true history hidden. Based on Hiroyuki Nishimori's award-winning manga, the 50-episode series blends action, humor, and heart as Megumi's former identity threatens to surface. The manga won the prestigious Shogakukan Manga Award and became a beloved fixture of shōnen comics, capturing the chaos and charm of adolescence through a uniquely inventive premise.