okok!
So, I while back maybe...around 2015? I found this pretty messed up smut manga.
It was about this high school guy and he messed around with three women. His science teacher, his class prez and his own mother. Has around 4-5 chapters. Another thing I recall, is he'd take naps in a dumpster under some stairs. Which, would cause him to see up girl's skirts!

Thanks for the help! 😳

Kanojotachi no Saishuu Teiri