HHKL-027 "Big brother, it hurts but... it feels good... do more!" "I'm behind my female classmates, so I want you to teach me all sorts of things..." After being asked by my stepsister to perform fellatio, she looked pained but still felt pleasure, awaken

My much younger, incredibly cute, and loli-like stepsister is worried about being behind her female classmates in development. She came to me for lewd advice! When she said "I want you to teach me lewd things," I decided to teach her deepthroating. I thrust my erect dick deep into her throat, making her drool and struggle, but it also excited her, awakening her slutty masochistic side! In the end, she even demanded in-the-vagina sex, so I filled both her mouths with cum!