Flat-chested tsundere sister Miu with black long hair. Studying dislike, the grade of mathematics is descending rapidly. Elder brother Kanata to pocket money improvement, a tutorial role is given by mother.

However, the younger sister of the adolescence climax refuses to be alone with the elder brother. After compromising, in addition my sisters friend Riko will come, we will hold a study meeting with three people!

Huge breasts Riko with brown hair twintail. Additionally it is super cute. Such Riko, goodwill is sent to Kanata.

A devil smile is floated, Riko that always sticks to the body of Kanata while studying. Younger sister who gives a glare to her elder brother of fawning condition. Suddenly Kanata it is in the condition being urged by both!?