my sister's not so turbulent, kitakawa aoi.

It's always my cold sister, but today it seems like she's looking at me flickering while fiddling with her phone. The door of my sister's room was open, so I looked at her and saw her masturbation with an electric machine, and from daytime I felt as she took her boyfriend in and shouted. And the act of inviting me. was my sister so turbulent?