Is there anything like lady crystal is a man where the ML pretends to be a girl? No BL tho...

Let’s hide my younger brother first

I haven’t read lady crystal is a man so idk if it’s similar

https://www.mangago.zone/read-manga/the_lady_i_served_became_a_young_master/
https://www.mangago.zone/read-manga/the_provincial_commander_s_self_cultivation/
https://www.mangago.zone/read-manga/watashi_ni_joso_wo_oshietekudasai/

Enjoy