Saotome Hotaru, balancing her education with part-time work due to family circumstances, receives a proposition from Kunugi Azusa, a teacher at the academy. Azusa offers to cover Hotaru's tuition fees but with the expectation of her cooperation in Azusa's research on insect ecology and improvement. Recognizing Hotaru's need for time to decide, Azusa grants her the space to contemplate without pressure. However, Hotaru faces another challenge when the student council president, Kamina Kaede, discovers her part-time job and demands that she quit. In search of guidance, Hotaru turns to Azusa once again to seek advice on what to do. Azusa suggests that witnessing a certain scene would provide a quicker understanding. She leads Hotaru to a room where Kamogawa Mei is being violated by giant insects, moaning in lascivious pleasure. Declaring this as the desired form of cooperation, Azusa prompts Hotaru to make her decision in the face of this unsettling spectacle. [Translated from DLsite]