Overview

Exclusive 4th edition! Nana Yagi's first challenge to a drama! The electricity and gas were cut off at my house, so I decided to stay at her house for a while. She has a younger sister, and this is the first time I'm meeting her, but her face peeks out from behind her back and seems to be wary of me. ``Nice to meet you, I'm Nana,'' she says shyly in a low voice, and seems to be a naive girl who has no immunity to men. A girl who is too weak to push and is sensitive and prematurely ejaculates when she can have sex right away! A week of having sex with my sister without telling my girlfriend!