Yaoi mangas that has a monster top or bottom. Like this one
https://www.mangago.me/read-manga/otoshi_ai/
Umi no Soko is pretty monstrous plus the art is insanely good https://www.mangago.me/read-manga/umi_no_soko/
You can also try the monster sex tag on mangaupdates: https://www.mangaupdates.com/series.html?category=monster+sex&genre=Yaoi&exclude_genre=Doujinshi&perpage=50
https://www.mangago.me/read-manga/kemono_jingai_bl/
https://www.mangago.me/read-manga/pendulum_kemonohito_omegaverse/
https://www.mangago.me/read-manga/boku_no_danna_sama/
I know I've read at least 5 different BL like this, but ya know when you're looking for something you just can't find it XD
What's Zhenya's eye color? It was blue in the past chapters but it's now green? Am I tripping.
it’s just the lighting of the room but his eyes are blue. it’s just the yellow lighting