https://www.mangago.zone/read-manga/the_boundary_of_delusion/ i think it's this one I'm not sure tho
Unless there is a backstory elsewhere that I’m not aware of, this is not it. The two semes did not meet until the uke introduced them to have a threesome.
It's a manga and the most memorable part is where the uke is tied and sitting like a dog then the white haired seme fuck the black haired seme while the uke bj the black haired seme
The uke also wanted to runaway but keeps getting manipulate by the two seme and keeps rping him
It's a poly bl manga where the 2 seme are childhood friends and also Inlove to each other, the uke also fuck both of them, there's a three-way where the white hair seme fuck the black hair seme while the uke was tied like a dog and bj the black haired seme