Mimic

Sekiguchi might wanna rethink this whole "Captain Save-A-Hoe" deal, lol.

Needs a group tag/MMF etc. It's only a small portion of the hentai, but it's there and you need to warn people.

His forceful reaction on Page 5 is a headscatcher (I think having him just slamming his hand down on the desk in front of her in protest would have sufficed) but I loved her playful, slutty reaction to it - asking him not to do anything bad to her while having her legs spread open. She's quite the seductress.

Hopefully glasses-kun manages to tame her.

Higashiyama is a true sex loving slut.

The way that Sekiguchi and Higashiyama interact it makes me feel like there's a previous chapter missing and we don't have the context of Higashiyama's previous shenanigans that Sekiguchi had to fix (going through Hirama Hirokazu's work I can't find anything related to this chapter)
My tin foil hat theory is that since we don't see a student council band on Sekiguchi's arm and the fact that he knew Higashiyama was the one in the video and her true nature, even though it isn't said I'm going with they're osananajimi.
Even on Page 19, the way Higashiyama says "after seven long years your sperm sure hits the spot." -what about seven years?