
idk if its just my memory playimg tricks on me but i swore i remember reading one more oneshot or a snippet where the uke sort of wear a kimono and they did a yakuza mistress play if im not mistaken

It was mentioned in passing but we didn't really get to see it
http://www.mangago.zone/read-manga/henai_maotoko_hen/uu/henai_maotoko_hen-chapter-2/3/

I hope haru isnt swayed by aki's action reason being that it is done out of frustration over a fight with someone he actually love.I love akihiko with all my heart but it is very cruel of him to admit of knowing that haru liked him all this time while acting sort of coy around haru.Throughout this manga it did show that akihiko cares about haru but being in a relationship with him is not what he needs now.He and ugetsu need to communicate with each other and learn to let go or embrace their feelings for each other despite the hardship that may come their way.
I know to some ppl the uke can seem like a little shit but being in a gay relationship can be difficult especially if one of them used to be straight,the uke seems to love the seme a lot to overcome his anxiety and marry him but that doesnt mean the anxiety dissipates,and jealousy doesnt always mean he doesnt trust his partner,it can mean that he doesnt trust the ppl around his partner