Title please

It's a BL manga and the story shows about some of the population getting beast ears and other characteristics like having heat. The seme and the uke are neighbors. The uke has a crush on the seme which will cause the seme to have beast characteristics because being near someone who is madly in love with you will create such an effect I think(?)

I don't remember much about it and I also can't remember what was my keyword for it when I saved it in my bookmarks ಥ_ಥ