Hello! I'm looking for a very specific adult manga! If you could help, that would be hugely appreciated.

It's a very non-mainstream one, black and white, old-school / unrefined art.
About a female teacher (T), a female student (F), a male student (M) (for high school)
I think M likes T, T likes F and F likes M? Not too sure, but F is def the catalyst she approached M and T individually I think, forces them into sexual situations, pretty sure they don't know about each other's relationship with her, def an S. She may have been a transfer student. M is the "don't-care" type.

Manga switches across time and POV, so like one scene is told from one character's POV and then some chaps later it'll show from another POV and its completely different.

Scenes (I think):

• M hiding and looking up under staircase at underwear, sees T and gets interested in her (later chaps show that F forced T to go up the stairs without underwear while secretly knowing M was underneath)
• sex scene with science tubes
• when from T's POV, it started slow like "__ is a special student" and then unveils backstory. ie. talks about relationship with F The spot I read up to, T was saying M was also a special student, which was at least chapter 3-6 (it was ongoing).

I read it quite a few years ago, so it would be quite by now.

Note: Pretty sure it was censored, and it has an actual story, so I'm decently sure it's not hentai. (although you can never quite tell with manga reading sites)

If anyone can help me, I would SERIOUSLY seriously appgreciate it!!! Honestly I don't really know why I'm even looking so hard for this, but it's really bothering that I just can't remember it. Thanks!!

Harems are the bane of isekai.

Kanojo-tachi no Saishuu Teiri

~4400 manga completed
~1700 ongoing...

Thank you SO much!! Can't believe someone knew it!

Harems are the bane of isekai.