HHKL-026 "Big brother, it hurts but... it feels good... do more!" "I'm behind my female classmates in many ways, so I want you to teach me everything..." After being asked by my stepsister to perform fellatio, she made a pained face but felt pleasure, awa

My much younger, incredibly cute, and loli-like stepsister is worried about being behind her female classmates in development. She came to me for advice on sexy things! When she said "I want you to teach me sexy stuff," I decided to teach her deepthroating. I thrust my erect dick deep into her throat, and she was drooling and struggling, but she also got excited and became a lustful masochist! In the end, she even demanded in-and-out sex, so I filled both her mouths with cum!