One day, when Wataru, a college student, returns home, her sister and her colleague's beautiful OL trio are having a drinking party. Attractive older sisters who are interested in Ubu Nawatari are tempted to cross one after another with the charm of adults as weapons, they are dressed as women and played with cocks, and they are cowgirl next to their drunken sister Full of exciting situations that every boy can dream of! !!
