Even though she's a gal, my stepsister is extremely shy, and after I've been teasing her every day, she's become super sensitive and has premature ejaculation problems, and cums over and over again! She suddenly transforms into a perverted girl who cums over and over again with a lewd expression on her face.

ギャルなのに超内気な義妹を連日チクハラしてたら超敏感早漏体質になってイキまくり！下品な顔でイキまくる変態女子に豹変。