This Hentai Series is a prequel to JK to Inkou Kyoushi 4 feat. Ero Giin-sensei Namaiki Hamedoru Friends. Takashi is a teacher. One day, two new students come to his class, Shizuka and Satsuki. Shizuka is friendly and Satsuki is quiet. Some days later the vice-principal suddenly orders Takashi to take care of them, and it turns out that Shizuka is actually selfish and egoistic...