MIAA-057 Clumsiness with her husband's masturbating brother

My brother (me) is beautiful but is sexually aroused all day long even though he is bullied by his stubborn sister. It looks like she's getting married soon, but I know that my sister has been a yankee asshole and pervert in the past. I'm going to use this as a joke to force my sister to do it! Until now, I've been voyeurizing sex with men, and it's time to give the results of my research on how to make my sister feel and ejaculate.