Shishunki Shoujo: Kari Kari

The main character of the erotic novel, Koizumi-kun, feels boundless sympathy for his classmate Rin-chan. But because of his unusual inclinations and strange mannerisms, he does not expect reciprocity. However, Rin has had feelings for our hero for a long time, but is shy to admit it.

As a result of some circumstances, Koizumi saves Kumi, Rin's best friend, from trouble, and as a sign of gratitude, she gives him a passionate night...