In this all-adult stepsibling role-play, Saki loves her big brother more than anyone in the world, so I cannot bring myself to tell her that I have a girlfriend. One day she catches us fooling around at home and decides to take all my firsts until I forget my girlfriend completely. Claiming that I need practice for my girlfriend, she pushes me into my first kiss, first blowjob, and first time having sex. I keep telling myself it is only practice, but soon we are having thrilling forbidden sex beside my drunken, sleeping girlfriend. Before I know it, I am addicted to my stepsister and can never go back. Saki wants her beloved big brother to stay with her forever.