The others said enough tbh, this is trash i would recommend a rewrite. Do you even read your own fanfic? Why do you let an op mc, be beta infront of trash? I don't get what is in your mind. But by the looks of it, not very much. Like i said, do rewrite. This is the only thing which i suggest to do, since this is leading to nowhere. After you done the rewrite(if you do, of course you don't need to but this is the best decision ) don't let the mc be a beta and follow someone weak, of course if he is interested in a girl. Then entering there team is okay (more like they should join his) since he wants to protect them/her but he should still be "dominant"(don't like the word tbh, i mean if the girl is unreasonable he does not let himself get punched, and dodge her and teases her or something like that) or more like a playful,teasing,mysterious(i know sounds kinda cringe,(about mysterious part) but what i mean is like he knows some stuff about the Tower but does not tell them. Or about his powers, obviosily when the mc gets them in the harem (one girl is okay to, but most of the time it gets boring with just the 2 so you get the what i mean. I hope... i think many jahad princesses would be candidates, i mean they get "manipulated" my jahad. Of course many not but they alteast fear him and are caged to be forever alone, and die. Besides that they are beautiful so yeah) mc can tell them about that(if he reincarnated, i would personally don't tell them that. But this is Situation wise different, like if he had powers before or did only got powers from his wishes? And did not got them himself through hard work.) And best friends that are trustworthy MAYBE to (if your mc is trusty then yes if not then no) Good Luck with your fanfic anyway, but i think a rewrite is the best thing you can do. There are not many Tower Of God fanfics, and if there are, not good (like this) so i hope that you do a rewrite to better this. Good Luck anyway👍 (get's 2 stars btw only because it's TOG, 1 star for this story and 1 star for TOG)
