The sixth installment of our 15th anniversary year project is a divine collaboration with S1's super popular exclusive actress, Aika Yumeno! My brother's wife, Aika, is cold towards me for some reason. One day, while I was watching some adult videos, she suddenly came into my room! And for some reason, we decided to watch some adult videos together! That night, she said, "Take responsibility for keeping me up at night," and our secret sex friend relationship began! Is her cold attitude when she's with her family to prevent her brother from finding out? Or is she just hiding her embarrassment? A forbidden relationship where we do it all from a completely subjective perspective! Living together with my brother's wife, who can't be honest with me, in an affair at home!