https://www.mangago.zone/read-manga/pit_a_pat/
its not the absolute base of the story, but the mc does have to pretend to be a woman at one point on a mission.
If you haven't read it:
https://www.mangago.zone/read-manga/reunion/
This is peak i also recommend this (づ￣ ³￣)づ
GURL I just finished it and it destroyed me, I meant, still love it, but damn! I almost cried so many times
Does anybody knows any bl/yaoi stories were the protagonist has to pretend to be a woman?
THANK YOUU