
spoiler
I don't think the uke is smart to begin with , but in novel he will get more simple minded , I don't know what that mean but I think it hint that his intelligence is getting slower like he loss ability to make simple decisions by himself , I think it also stockhom syndrome and anxiety he develop cuz what going to happen to him
in novel , the uke will keep getting refered too as simple minded , and the seme will not regrat anything he did to the uke , infact he will tell uke it was his own false he ended up this way, cuz the uke will escape twice from the seme room , and first time he will ignore the seme calls so he will send his pictures to gangesters who Grape the uke and torture him , then the seme will lock up the uke in that same room he got raped
the uke will became timit and obey seme out of fear of being thrown to men again who would rape him ,I don't know why he escape second time cuz the novel still not translated , but I think he was not trying to escape and the seme would misunderstand and make the uke frined from first chapter have sex with him against the uke will cuz the uke actually used to look down on that guy , so it was way to humilate the uke by making him look pathetic in front people he looked down on , and the seme was also spreading his photos to people who hated him , so he gonna be totally isolated , I don't know how but the uke arm and leg will be broken and in end he will beg the seme not to throw him away and he not mind going back to their room and that he wouldn't escape etc .
that how it going to end so no the seme not gonna regrat anything cuz in first place he was taking revenge on the uke cuz the uke did that to the seme during middle school

in very begining their was korean site where the novel was avaliable with out translation so that where I first read it the translation was bad , but I managed to read the whole novel roughly , but now their another English translation of the novel but it still not complete yet ,so I actually kinda reading it twice now , you don't need to believe in my spoilers , just didn't want you to have false hopes
the seme is 199% end up going to regret this. 1% off if the uke was more stupid than he looked.