When I return to my hometown, I discover that Karin, once my quiet and plain childhood friend, has become a cocky gal. Even the way she speaks has changed, and she teases me by asking whether I want to try her blowjob skills. I think she is joking until she starts sucking my cock and makes me come uncontrollably. From that day on, Karin toys with me, calls me over whenever she is bored, whispers in my ear while riding me hard, and forces me to fill her again and again.