"You mustn't do anything... it's my fault." My wife's friend, Ririko, suddenly said these words, and I couldn't hide my shock. I'd be lying if I said I hadn't noticed Ririko secretly sending me passionate glances when my wife wasn't looking. I know that having a relationship with my wife's friend isn't something that should be allowed. But Ririko's seduction was getting bolder and bolder. I couldn't resist her and she took over both my body and Kokoro...