Irc The Hero of church fight with Demon Lord or his enemy? He died and cursed to become lady. He wakes up as a Count daughter under a step mother. To regain access into the church he(she) engaged with the captain of friendly independent knight squad So hero can go together with captain to meet saintess in the church. The step mother wanted to kill/isolate count daughter to receive household power for herself. The assistant of knight squad captain is half demon and strict as a result.
If I remembered correctly it's a manhwa.
Thank you for your help