I confessed my love to my friend Riho-chan, who I've had a crush on for a long time, and it was a success! She became my precious girlfriend! But now, my precious girlfriend was gang-raped by some delinquents! She was enjoying sex while exercising under the influence of aphrodisiacs... "You've got to be kidding me..."... It wasn't hatred or frustration or unforgiveness... I felt sexual excitement. I got an erection when I saw her having sex with another man. She even came inside me, and even when my semen started to flow back, she was still pursuing me... A scum erection NTR!