I have a well-made older brother who goes abroad for work. Unlike me, I have a lot of trust from my parents. Such an older brother returned to Japan for the first time in a long time. Moreover, I brought a foreign fiancée! My brother-in-law, who started living together, is trying hard to like his family even a little in Japan, which he is not used to. One day, my brother contacted me that I might be working all night, and my parents weren't traveling ... It was a night alone with me and my brother's wife. My brother-in-law who got drunk because he was drinking with me was strangely sexy ... I couldn't stand it ...