She (?) Snuck into My Bedroom… "No… I'm Cumming!" Getting Teased by My Childhood Friend All Night Long

"“I can’t believe that such a pretty girl… is licking my…!” My childhood friend Ryou has transformed into an exceptionally beautiful woman. The first time I saw her all grown up, I was so instantly lovestruck that I nearly felt like a man… And right now, that very same girl is creeping into my bed!?