"I want to see more of Aya-chan's orgasms." 28-year-old high school teacher Minami Aya is a big fan of the popular idol group "arise" SORA. Her parents' house is next to each other, and it is her daily routine to watch over him who she has loved like her younger brother since she was little, and he has become a reason to live. One day, when I was watching the recording as usual, I heard a big announcement about marriage'' and withdrawal'' in the program――!? It was Aya, but ... that marriage partner was actually me!? Every time she is caressed, Aya's lower body melts away... However, she has a reason why Aya can't accept her marriage right away.