So I'm currently looking for some meng (most preferably school life) comedy romance with the main FL cross-dressing as a guy. I've read a lot of manga with those genres, and have been thinking if there's also some novels… Tysm for the suggestions!! (◕▽◕✿)
Oh I have to catch up to the updates on this one but Being a Supporting Female Character at An All Boy’s High School (Transmigration) has the girl crossdressing. Also National School Prince is a Girl is pretty good (but I stopped keeping up with it eight hundred chapters ago and it's being translated by Webnovel)
My personal favorite Transmigrating to Before the Big Boss Blackened but there are only 2 translated chapters currently so I hope you're okay with MTL
Becoming the Male Lead’s White Moonlight The Consequences of Having a Master-Servant Relationship With a Yandere After Reincarnation The Villainess, Cecilia Silvy, Doesn’t Want to Die, so She Decided to Crossdress Rebirth of the National Male God
just read the description, and even through it's not exactly what I was looking for, it seems like a really fun read. Ty!!
Release that man has a similar theme but it's probably not what you're looking for. Just mentioning it.