Idk how helpful these are as they aren’t super similar to what you wish for but they are all pretty good
https://www.mangago.me/read-manga/nennen_saisai/
The later story is the god of death x immortal human
https://www.mangago.me/read-manga/my_blood_and_soul_to_you/
Vampire x Demon super good
https://www.mangago.me/read-manga/yagi_to_ookami_no_hatsujou_jijou/
Goat human x wolf human (has rapey vibes at parts btw)
Can anyone recommend a supernatural bl where both the mc's arent human? Im looking for something similar to 'what you wish for'