During their student days, Shinji, Hotoke, and Yokoyama formed a band aiming to become professionals. Nostalgic for the old times, they decided to have a drinking party at Shinji's house. The unchanging structure of Shinji's house brought back memories for these guys. And in Shinji's house where they played as kids, there was always kind Shinji's mother… She is a kind aunt, but all the erotic acts are just the two guys' fantasy.
