I read the first ten chapters, the only important LI to me is Minase, I searched about her, she didn't have sex with anyone other than mc, and that's greatStarted Ok-ish, got disapointing in the mid 20-ish chapsters with pointless drama and NTR. Ended with ruining the female Teacher, forgetting FMC2 + her female friend, added more pointless male leads + NTR for FMC1. Wont spoil the end - you have to see for it yourself lol.
Remember how this trash back then was promoted as "Harem". And yeah, to some point it went this route... but it stopped somewhat when the Teacher got sacrificed for whatever the Author smoked that day. Not recommand if thats what your aim is here.