hmm there are so many
can u describe a little more?
ouran high school host club!!!
Probably not right but this came to mind: http://www.mangago.zone/read-manga/the_reincarnated_cross_dressing_princess_cannot_find_a_marriage_partner/
probably (๑•ㅂ•)و✧
all i read was the description so I don’t know anymore
best one ngl
All I know about it was that there was a girl that ended up in an all boys school and had to cross dress not to get kicked out. it was a reverse harem