Last chapter i was giving him a pass, because i assumed that he was somehow ok with her being seeing by other people, so i wrote that off as not being a problem
But he is actually jealous and overprotective of who gets to see her body, and doesn't actually likes the fact that half of japan is faping to her
So this guy is a straight out cuck, but worse since at least a cuck gets to enjoy being cuckolded, this guy can only mald out his frustrations that wont lead anywhere because he is broke, incompetent, and has low self-esteem, and the girl knows it and still shoves it out on his face denying him the only weird lame hobby he has, which is nutting to her posters on private, because he doesn't even has privacy
Their relationship somehow just managed to get even worse, i am losing all sympathy for these 2, i hope they never get together, the one childhood friend couple, in which i wish the childhoof friend trope of staying forever as friends comes true