[Tetsuna] Chain of Defilement Ch. 1-3 (Shikiyoku no Kyoushitsu to Ikenie Shoujo) [estradiol]

Shiroha and her curvy senpai test their courage at the school's most infamous legend—the abandoned classroom of the ghost teacher—only to discover the rumor is horrifyingly real as unseen hands rip through their uniforms and claim both trembling girls where they stand. What starts as a spooky dare becomes a relentless supernatural ordeal, the invisible spirit driving the sobbing schoolgirls through one humiliating climax after another with no escape and no mercy. But when the assault finally pauses, a darker mystery surfaces: senpai knew about that classroom long before the tour began, and her knowing smile in the shadows promises the chain of defilement is only just beginning.