Calling

TitleCalling
Aliasesコーリング
DeveloperNigred
Publishers Nigred

Description

Girl is interested in self-exposure. She sees a kindred soul in main character and confesses to him about her habits, but she is mistaken and gets into sexual slavery instead. With her help, her sister becomes a sex slave as well. Main character is to train two girls in exposure and various techniques.

[From vndbreview]