Responses
It sounds very familiar..did you try looking through oni, mind-break or mask, tags? ://
https://www.mangago.zone/tag/mind+break/ https://www.mangago.zone/tag/Oni/ https://www.mangago.zone/tag/Mask/
Nvm I found it but it was on myreadingmanga not here (• ▽ •;) it's Orc Aite ni Inmon Nashi de Mesu Ochi suru Wake Nai daro!. Thanks for giving me the idea to use the tags tho, I saw a lot of potential reads ლ(´ڡ`ლ)
it was a knight or a prince that was fighting an oni/ogre invasion and then he gets captured, mind-break n shit, then one of the oni/ogre removes their mask and he's actually a good looking guy then they marry and i think there were also sequels but i wasn't able to read them for some reason