I don’t even think him slapping him was the problem; I think the author just did a crap job writing this arc. Tbh I see the vision where it was suppose to be this build-up of Ayumu acting recklessly and not having enough awareness/caution when it came to his relationship and Jun at his wits end. I think it all could have made sense if they focused on Jun’s perspective and maybe him feeling like he is responsible for bringing out this side of Ayumu, but feeling helpless because he can’t always make Ayumu be more cautious or control the consequences of that. If it had focused on this building emotional strain on Jun as well as the issue of them trying to handle things separately (instead of as a couple), then this reckless act of Ayumu almost getting himself killed and Jun having to save him could be more of a clear breaking-point for Jun. The slap would make more sense. Maybe Jun could have cried a bit too after he did it when he was yelling to show he felt bad about it but was also scared for Ayumu’s life. This could have also handled the issue of Jun constantly keeping all his problems to himself instead of sharing his stress with Ayumu.
I don’t even think him slapping him was the problem; I think the author just did a crap job writing this arc. Tbh I see the vision where it was suppose to be this build-up of Ayumu acting recklessly and not having enough awareness/caution when it came to his relationship and Jun at his wits end. I think it all could have made sense if they focused on Jun’s perspective and maybe him feeling like he is responsible for bringing out this side of Ayumu, but feeling helpless because he can’t always make Ayumu be more cautious or control the consequences of that. If it had focused on this building emotional strain on Jun as well as the issue of them trying to handle things separately (instead of as a couple), then this reckless act of Ayumu almost getting himself killed and Jun having to save him could be more of a clear breaking-point for Jun. The slap would make more sense. Maybe Jun could have cried a bit too after he did it when he was yelling to show he felt bad about it but was also scared for Ayumu’s life. This could have also handled the issue of Jun constantly keeping all his problems to himself instead of sharing his stress with Ayumu.