A deep orgasmic sex that changed the life of my brother's wife, who experiences the pleasure of a year in just five minutes.

(I wonder if your sister-in-law is doing well...) Toshiya, who took advantage of the summer vacation to visit Tokyo, is forced to stay at her brother's house. He was happy to see Yumi, the brother's wife she secretly admired, in a healthy way...but by chance he peers at Yumi's masturbation. Toshiya can't hide her excitement at Yumi's lewd behavior for the first time. After Yumi's marriage, the love she had been holding onto, revived and overflowed. He leaves that impulse to Yumi with his thoughts...