A high school boy's friend's sister finds out that he has sensitive nipples. Seeing this, the sister's lewd nature is awakened! The high school boy's dick gets rock hard as she relentlessly plays with his nipples! Unable to resist, the sister pushes the boy down and fucks him raw! She pistons him to the brink in a spider cowgirl position! He teases him so much that he ends up cumming inside her! And this is an expanded version with 4 girls included!