Basically what i remember is mc had a childhood friend that they promised to get married later but when they became uni students she got herself a bf. she later got dumped while having sex (not sure but did get dumped). She used to make fun of mc bc of being virgin or something but after she got dumped she developed trust issues with guys and now relies on mc for support. But our mc got tired of her slutty attitudes from before so ignores. Then, the entire school gets transported to another world. Our mc has the power to increase potential? of people that he has sex with That is all I can recall anyone got any idea of what it is? any help will do
https://www.novelupdates.com/series...-unintentionally-ntring-a-harem-of-true-love/ without isekai'd part