Sansha Mendan: Rensa Suru Chijoku Choukyou no Gakuen

Ryou reflects on what he perceives as fateful circumstances leading to his transfer to Jousei Academy. Hagiura Aina, a teacher of Japanese history and advisor to the gymnastics club, welcomes him with a polite smile. Unbeknownst to her, Ryou previously assaulted her older sister, Hagiura Yuuna; the incident was covered up, resulting in his enforced transfer to this school. Ryou soon coerces Yuuna into another act of submission, forcing Aina to witness her blindfolded sister servicing him. Overcome with fury at this humiliation, Aina experiences an intense physical reaction, a heat spreading throughout her body with particular focus between her legs.