My childhood friend, a mischievous but innocent delinquent girl with her underwear showing, is now being wildly thrust into like a woman in my room! (Nanami Hina PFES-019)

My childhood friend, a virgin, always hides in my room with her underwear showing. She has a sharp tongue and is often violent towards me, but she's actually a very pure and gentle person. One day, worried about me being a virgin, she invited me to watch porn together so she could study...