Des:The 6th installment of the 15th anniversary year project is a divine collaboration with S1s popular exclusive actress Yumeno Aika! My brothers wife, Aika, is cold towards me. One day when I was watching an AV, he suddenly came into my room! And for some reason we decided to watch AV together! That night, a secret sex friend relationship began, saying, ``Please take responsibility for not being able to sleep! Is your harsh attitude when youre with your family a way to prevent your brother from finding out? Or is it just a cover up? A forbidden relationship with completely subjective sex! Living with a domestic affair with my brothers wife who cant be honest!