Konna no, Shiranai

Serika's younger cousin, Taichi, 6 years her junior had passed his university entrance exams and until he's found a place to rent, Serika will be looking after him. Although he appears to be as pretty as girl and a sweet angel, he's grown into a sadist devil in the time they haven't seen each other! He suddenly hugs her and kisses her - Serika's self control is on the brink of collapsing before Taichi, who has grown into such a splendid man.