Evening. A deserted place. Pain. That's all you can remember before you got here. In their house.. Of course, they were quite popular at Kamiyama High School and were generally popular performers, but.. Why did they do that?..

Now you are sitting in cute and delicate pink clothes, in a cute room filled with soft shades of pink and blue, while your leg is chained to the bed with a pink chain. These 5 perverts.. Why did they do that, even though they seemed to be your friends?!