I Can't Marry a Yakuza! Not While I'm Cross-Dressing as a Man!

Chihiro finds out that her hand in marriage is promised to a young yakuza leader. Although conflicted, as she attempts to live in hiding cross-dressed as a man, she's slowly attracted to the young leader. However Chihiro's identity is discovered... in the bath?! Just two innocent lovebirds in a wild setting.

(Source: MangaPlaza)