Currently, although this is a bit harsh, there isnt much reason for a girl to fall for the mc lol. So I would reccomend that the mc gains more power over time, and explores or goes somewhere else where he isnt as well known and finds more girls that way. You could continue the world and character expansion for quite a while with smaller plots before you decide on end goal.

Lol I feel im giving suggestions a bit too often and theres no way to include them all lol, so no pressure but heres another one: I'm not the biggest fan of loli stuff most of the time, but I really like the kind of cuddlable girl that just hangs around, literally for holding and instantaneous xxx all the time. I've never seen it in netorare before though. ^^^the important part^^^ Below are specifics that I thought of but arent that important I would like a girl, like I described above, to basically be a long term antagonists toy thats always around them, and although not complete betrayal or anywhere near, more of a in private thing with an antagonist, where although she can love Alex romantically, she still only gives her body to antagonist even without Alex's influence or nature (The thing I want here is less on her part, but more on the antagonist having complete control over everything but her feelings for Alex, due to being addicted to antagonist for example). She could even start with the antagonist. I just want somthing a little little different than the public humiliation and the "doing it because of alex". Also, unrelated, but I would reccomend adding more short scenes throughout like what you did with Alice, that way readers have short scenes even in more plot based chapters, that way you could even add plot chapters more often if you wanted. Sorry for the long comment lol

Rather than "real" betrayal I guess what I mean is more a complete betrayal.

Is there ever going to be a real betrayal by one of mc's girls? I know some people wont like it so no pressure, but you said you would do any fetish, so I figured I would ask for a girl who is loved by Alex to become fully corrupted and actually fall hard for antagonist over Alex.

I like this idea, personally though his mom getting pregnant is cool, but I would prefer if it was more immoral. Like if he gets a fiance/wife or his gf does a "compete to impregnate" play with obvious results.