Episode :
Mitsuki, the proud and tsundere younger twin sister, found her academic performance stagnating. In response, the inappropriate tutor proposed an intensive private training camp. However, when she arrogantly declined, he trapped her by revealing a video of her older sister, Kasumi, engaging in a sexual act with him. He claimed this was the key to improving her grades, resulting in a reluctant yet intense sexual encounter that ultimately led to him breaking down and training the defiant younger twin.
