Based on the erotic game by Noesis.



A kind and reliable older sister, Mizushiro Ayaka.

A younger childhood friend and now my girlfriend, Tsurutani Ayaka.

While I'm happily getting along with the two, I wasn't satisfied. That is because I have a hobby that I cannot let surface.



I want to do, S&M.



I sneakily buy tools for my personal use, stare at them, touch them. One day as I was expelling myself of my urges, I noticed that someone had entered my room, and closed on to that secret.



"Let's try setting a trap"



I expose who discovered that secret. And so, our abnormal relationship began.



(Source: Noesis Homepage)