Reina, a female college student whose mother has remarried and has a new life with her father-in-law. Reina was supposed to forgive her very kind father-in-law, but one day it changed completely. I witnessed my father-in-law sneaking into Reina's room and devouring her underwear. However, I don't want to give birth to my mother's sadness. Reina keeps a distance from her father-in-law on that day, but her grandmother gets sick and her mother goes home for a while. And a cunning and lascivious father-in-law interferes with Reina trying to escape to a friend's house. Adult summer campaign! Reina Taozono will appear live!