Plays some crappy FPS on a console instead of PC, expects his GF to bring him some mango from the conbini instead of just picking it up himself. Worst of all, physically assaults her (although I enjoyed the scene when she fought back, was cheering her on), and then to top it off, shows the guy at a pachinko parlor sucking on a nasty cancer stick.
Only way to make it worse would to show him physically abusing the dog, or do a reveal where he's actually in the yakuza or some shit, and roughs people up while doing debt collections. Like damn, lol. Author-san is doing the best he can do demonize the boyfriend and make him a super unsympathetic character in the shortest amount of time. ?
The author's shameless self-promotion of his other works via the twitter convos gave me a chuckle.
The last page made me think of Mark and Coyote Peterson. Not sure how many will understand the reference.