Finally read the chapter.
Zekt realizes that without MC their team is kinda broken, they lack tactics and stuff, while also he seems to got bored of the 3 girls cause they aren't even mid tier in his eyes, when he can go after princesses. Thus he is willing to give out all 3 of them to MC if that would bring MC back.
Mel said MC was her lover thus she hurt him the most, but admits that he was more like an older bro/dad figure for her and that she even talked with MC when she was scared Hero wont fuck... I mean chose her. But cause MC told her that if she is alone he will be there for her she is fine with going to MC.
Black hair girl says she always hated MC, thus she bullied him, but she realizes that MC never really become angry with her and thus thinks being with MC will be better than with Hero in the long run.
The blond out-right admitted she was in love with Cares cause he seemed mature/older when talking and stuff (well he is 40yo dady isekai XD), but with all the pressure from Hero and lack of it from MC she gave in, but now realizes sleaziness of Hero and believes she would be happier with MC.
Question is, would the 3 of them be happier with MC knowing he actually is a MILF lover and they probably would either need to wait 10+ years or never will really be in MC radar other way than "daughters" he admitted in first chapters he saw them ass?
Also as a side note: With the spoilers and theories people said, it starts to make me kinda feel sorry for them 4 kids.
Moms never really taught them anything it seems, Black hair girl even said she hated MC cause their moms were all over him cause he was mature (duh he is a fucking 40yo isekai).
Fathers were mostly sleazebags and if they thought anything to them kids is that pussy is only worth it if younger than 20.
MC technically speaking is the oldest among all of them, as long as I understand he couldn't really admit to being an isekai and fix the moms/dads, he could have thought things to kids - instead of he basically did all the shit for them in their place.
So when MC was "kicked out", the kids basically became a group of 4, incapable of really doing anything kids/grown ups should do. It takes them ages to realize their issues, and while brooding they basically let it seems multiple villages to fall down and thus many people to die. Hero is basically a carbon copy of his father and sees girls like walking onaholes, girls realize how good MC was, but still gone after Hero cause of "status". Sadge.