My brother is good at his job and has a beautiful wife with big breasts. I want to marry someone like her Itsuka! Then one day, my brother's wife suddenly came to visit! Apparently she had a fight with my brother and ran away from home... but she's staying in my room!? I suddenly started living with my brother's wife! It's too awkward, but when she complains about her sexual frustration, my reason collapses...