Responses
The black hair guy in cover? Unknown rn
The blonde guy in cover? Also unknown since Jin escaped the Scanner place
There's only 14 chapters rn and the current focus is on Jin and his old group/group he sold narcotics with.
SPOILERS
.
.
.
.
.
.
.
.
.
.
.
I don't think the blonde friend from his narcotics team is going to be endgame since there's a green hair jerk that almost killed him and could probably be set-up to be with the blonde friend.
Jin is probably a switch? He reunites later with one of his friends outside of the place and his friend is blond with red eyes (not the guy in the cover). They talk about something and he fingers his friend's ass and his friend squirts liquids from his ass.
The elf guy and the redhead beast man also have sex in chapters 5 - 7, where elf guy tops the beast guy.