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 the number of times he masturbates is abnormal for a healthy young man. Then, one day, Yurine starts masturbating herself in order to take advantage of Azuma. Azuma is caught by the provocative moaning voice, and is lured out to the room by Yurine's temptation.