I said in one of previous chapters that this MC looks to me like typical porn manga cuck - a dude who will watch his girl being stolen and fucked by someone else, and instead of fighting he will come to realization that the girl got a better dude to care for her, and worst case scenario masturbate to the NTR happening or even worse come in his pants without touching his dick as such strong cucks exists in doujinshis.
I got a lot of confused/dumb reactions, and yet each chapter I am kinda more and more sure that this is who this MC is. A School Days ending is possible, but not because he becomes an asshole player who fucks anything that moves like MC in it, but because his spine is so flabby or non-existent he will end up in bed with anything that moves around him and touches him the right way - till those find out about themselves and the fucking and murder MC.
I recall one NTR porn manga - where MC had so little self-esteem that he literally ignored his childhood crush to the point of making her cry and begging him to talk to her, when they had an summer vacation - he run away to the countryside without even saying a word to her, and she had a club training camp, at which a sempai who likes her pursued her, she realized that wasting time on that spineless cuck just hurts her mentally, and she gave herself and the "new guy" a chance. New guy loved her including in the bed of course and the epilogue is MC seeing her happy with her new boyfriend who he felt inferior towards, and in his wide wisdom he decides to move himself even further apart from her to not interfere with her and her new boy love. Which to a certain degree is kinda really a gift for her, cause his beta/cuck behaviour thus far was really hurting her.