The manga is about vampire, uke is the vampire and the seme is a human(kinda) and he works with the church. The uke is seme's master (that's what he called him) this is manga and this have anime too. Also more info is the uke can make servant weapon (girls) from his blood.
Maybe Vassalord? It's the only vampire bl anime that I can think of.
https://www.mangago.me/read-manga/vassalord/
Anyone have some recommendations where cheaters get tamed like this one https://www.mangago.me/read-manga/ubawareru_koto_marugoto_zenbu/
Okay , it's giving a color red .. the uke
lmao just enjoy it bro