Supreme under heaven, peerless throughout the land! Chi Yu-rang, the Heavenly Demon and greatest warrior in the martial world, gets trapped on a mysterious unknown island called the “Demon Realm” by an unknown force. After ten years of solitary survival, he discovers through a mysterious device that four worlds have merged into one. To reconnect with the outside world and ensure his own survival, he makes a drastic decision — returning to youth in the body of a young girl. “Thank nyou, Heavenly Demon-nyan~! ☆” Reborn as a beautiful young girl, the once-fearsome Heavenly Demon Chi Yu-rang — now nicknamed “Heavenly Demon-chan” — must conquer the streaming platform Kwitch and find a way to escape the Demon Realm. [Original Novel](https://series.naver.com/novel/detail.series?productNo=13019051) **Original Webtoon:** [Naver Webtoon](https://comic.naver.com/webtoon/list.nhn?titleId=851642), [Naver Series](https://series.naver.com/comic/detail.series?productNo=14154785)