Unlike me, my sloppy brother is a talented man, and my brother's wife, who has never known any other man, is going to live with me at my parents' house for a while! Then, my brother's wife, who is too serious and has little knowledge about erotic things, is curious to ask me about naughty things that I can't ask my brother, since I'm in the middle of puberty! When I reluctantly tell her, her erotic desire only increases! Finally, she can't suppress her desire to insert a dick other than her brother and begs for sex! She loses herself and goes crazy, and has continuous explosive orgasms in a self-liberating cowgirl position! She is asked again and again!