Am I the minority in thinking that he was always going to end up with a guy? He's in a BL world and he's OUR main character, I always assumed that we'd learn his name the moment his romantic story unfolds. But what matters is how it happens.
I don't know if this is the guy he's gonna end up with but even when he triggers a flag it's always been easy for Mob to get out of it, because those characters didn't really care about him. They were just part of a storyline.
Mob-kun is a master of dodging flags but he can't dodge true love this way, if someone legitimately cares about him they'll keep falling for him no matter what he does.
Again, don't know if this is the guy but so far I like their development.