Title pls

I was searching for a bl. I was reading on this site but it goes missing after that restart thingy.
So, it's a bl. The top is emperor who is a tyrant and bottom has horns and has poisonous blood. The top massacre the bottom village and took bottom with him, where the bottom kinda fall in love in top's brother and ran away with him. It's a historical korean manhwa/webtoon.