"You can do it myself, stepbrother." She looks just plain big tits, but she's actually a shy, perverted wife's younger sister on a trip.

It was supposed to be a hot spring trip with his wife, but Shinji is a little dissatisfied when his wife's younger sister, Ena, comes along with him. However, when my wife suddenly runs out of the inn and gets alone with her, she receives a consultation from her...and this leads to her close and becoming closer. However, unable to resist her commitment to her, she ended up stacking her body... Shinji tells her that he only had sex once, as he was only sexless. However, Ena sneaks into her futon without caring about this...