About 15 chapters in and I'm rather enjoying this. I think the art style is rather important to it, despite people calling it shitty. It really helps keep the focus on the actual theme of the manga instead of being about fanservice or titillation. Sure the premise is horny bait but the actual execution is more along the lines of a gag manga that occasionally dips it's toes in exploring these characters and their personal hang ups regarding sex and relationships.
She helps the lesbian girl come out of her shell a bit and be a bit more accepting of things. She helped the gyaru out from attempting to do the same stuff she's doing and potentially ruining her life (the prog has essentially given up on that so doesn't care about doing it himself), and as of the little student council mini-arc she helps someone else who was on her way to becoming like him in the future know she doesn't have it too bad and find out she can find someone who loves her despite her issues. He even starts recovering from his previous shitty personality to learn to care more about others, to take care of himself if only to not harm those he cares for, and that there are actually people who care about him and probably did before he died too.
It's honestly a little odd to see this is a more hopeful and light hearted story, usually when I see this sort of art style, dark joke premise, and young characters it's something like Takopi's Original Sin or Goodnight Punpun.