The Sickly Female Sword Fairy in the Ancient Tomb

The woman is strong, yandere, possessive, and dotes on her husband.

Yandere, Possessive, Jealous

Is there any male protagonist who is a demon or villain who changed because of the female protagonist's ears? He didn't like the female protagonist in the early stage, but became extremely possessive in the later stage.

I Want to Read a Collection of Yandere Short Stories, Please Recommend 😭

I want to read a book similar to "A Collection of Various Small Dark Rooms".