JUL-323 I will never forget the married woman I met at that empty house that day... - Yuka Oshima

Manabu, a ronin student who was living at home with his parents, was wandering around the neighborhood, engrossed in an exploration-type monster collecting game that has recently become popular. - One day, guided by the game, Manabu comes to an empty house that has rarely been visited since ancient times, and notices a woman's voice coming from the back room. - Then, when he timidly peeks in, he finds Yuka, a married woman with whom his parents have been close, writhing in a lewd manner that cannot be imagined from her usual calm and neat appearance...