PPPE-451 I got an erection watching my big-breasted girlfriend get raped by some thugs using an aphrodisiac, and get fucked until their sperm flows back out. - Nakayama Fumika

I finally confessed my feelings to Fumika, a classmate I’d long been pining for—and she said yes! She became my precious girlfriend. But then, a group of thugs committed a horrific act, subjecting her to a gang rape! Drugged with an aphrodisiac, she was actually enjoying the sex, moaning in a daze... "N-no way..." It wasn't hatred, regret, or a sense of unforgivable outrage that I felt—it was *sexual arousal*. Seeing her lost in lewd, drug-fueled sex with other men gave me an erection. Even as they finished deep inside her—with their semen spilling back out—they kept on going... A depraved, NTR-fueled erection!