SONE-398 Her innocent younger sister seems like she'd definitely let me do H things, but she missed the last train and is staying over. Kuraki Hana.

It was about a week ago that I had a meal with her and her younger sister. 'I missed the last train, is it okay if I come over now?' Suddenly, such a call came from her younger sister whom I had only met once. Before I could refuse, the intercom rang. Hua, who had come slightly drunk, was unusually close, and my borrowed pajamas revealed glimpses of her cleavage without any guard. 'I didn't tell my sister you were coming? It shouldn't be found out, right?' Everything she said and did seemed like an invitation. W-W-We can do it (Gulp). Ten more seconds until I touch the forbidden relationship...