Konchuu Kansatsu

The story takes place in the halls of Kisaragi Academy. Kunugi Hisataka, a newly appointed biology teacher, conducts research on insect ecology. Through his own methods of breeding and genetic manipulation, he has succeeded in creating giant specimens. However, his secret experiments are discovered by Kisaragi Kagome, the granddaughter of the school's principal. Fearing that she may expose his research, Kunugi decides to silence her by using his insects to violate her. Despite her cries for help, no one comes to her rescue, and she is deflowered by the insects. Blackmailed and coerced, Kagome is forced to cooperate with Kunugi's research. With no escape in sight, what awaits her in this twisted future?

Translated from DLsite