Do M Imouto Onedari Kojin Lesson ~Watashi no SEX Katei Kyoushi Onii-chan~

Akitoshi Arikawa is a young student at Tokyo University who has been living alone away from his parents for a long time. His older sister Midori once asked him to take care of his adopted sister Ichigo. Not for long, but just for a while, until she returns from a business trip. Midori is very concerned about her sister's unsatisfactory grades and, in addition, asks her erudite brother Akitoshi to improve Ichigo's academic performance a little. Akitoshi takes up teaching, but after a while realizes that the girl shows absolutely no interest in education. After a short lecture, Ichigo, with some fatigue and irritation on her face, jumped up and declared to the newly-made sensei - "Teacher! I don't want to study. I want to have sex! Please, better teach me sex..." Shocked and excited, Akitoshi could not overcome the temptation and came up with a special teaching technique - sex as a reward for successfully passing tests...