Yuuji, who was looking for an apartment to move to Tokyo, was shown this very ordinary apartment by a real estate agent and immediately decided on it. There was only one reason for this. The room opposite his own was in full view, and the occupant was a beautiful married woman with big breasts. Soon after moving in, it became Yuuji's daily routine to peek into the room opposite. Unaware of anything, the married woman was wearing no bra and a camisole, exposing her big breasts. One day, the married woman started masturbating, and as Yuuji was engrossed in peeking, their eyes suddenly met...