Yurine, whose husband is away on his own and spends his days busy with free time and sexual desire, has something on his mind lately... That person is Azuma, a college student who recently moved. I can hear him watching porn and masturbating every night through the wall, and he does it an unusual amount of times for a healthy young man. Then, one day, Yurine tries to take advantage of Azuma and starts masturbating herself. Azuma is caught by her provocative moaning voice, and is lured out to the room by Yurine.