Kanojo Netorase ~Ore no ED Chiryou ni Kyouryoku Shitekureru Saikou no Kyonyuu Kanojo ga Saitei Oyaji ni Ubawareru Made~

You—Rikuto Watarase—are a handsome guy who is immensely popular with the girls. Your girlfriend, Serena Suzuhara, is a bright, kind, big-busted gal who struggles with academics. Contrary to her fair-skinned gyaru appearance, she is a deeply domestic girl who frequently makes time to cook dinner for you, knowing that you live with your single father and lack proper nutritional balance. You are a deeply affectionate couple envied by everyone around you, and you have already slept together multiple times (using protection, of course). However, you harbor an inferiority complex over your inability to satisfy her in bed.

One day, after discovering that Serena has been secretly masturbating out of dissatisfaction after sex, you fall victim to erectile dysfunction despite still being a student. Instead of blaming you, Serena gently comforts you, agonizing over whether it might be her own fault—a reaction that only leaves you feeling even more miserable.

Returning home one day after practice with your local soccer club team, you witness Serena—who came over to prepare dinner—getting sexually harassed by your father, Nobuto. Nobuto is a man who was previously divorced by your mother after it was exposed that he collected home-brewed adult videos of his own extramarital affairs on his computer.

Because of her relaxed and forgiving personality, Serena treats Nobuto’s behavior as a mere joke and fails to strongly reject him. While you naturally feel rage toward Nobuto, you simultaneously experience an unprecedented wave of excitement at the sight of your beloved girlfriend being sexually harassed by your father.

That night, Serena is genuinely thrilled when you get an erection for the first time in a long while. As she presses her plump, fleshy lips against your erect shaft, you ejaculate in an instant and find yourself unable to get hard again afterward. Left with no choice, you confess to Serena the real reason why you got aroused.

“In that case, I’ll keep letting your dad sexually harass me!”

Though hesitant, you ultimately agree to her naive and devoted declaration, knowing she is putting you first above all else. From the next day onward, you intentionally return home late and sneak inside without making a sound, peeking at the scenes of Nobuto harassing Serena.

While your erectile dysfunction is cured, Nobuto’s sexual harassment steadily escalates. Watching your biological father smirk vulgarly while pressing a shaft far more robust than your own against your beloved girlfriend, claiming “It ended up like this all because of your dirty body, Serena-chan,” fills you with intense rage, jealousy, and arousal.

“For Rikuto’s sake… I’ll keep letting your dad harass me, okay…?”

Offering her body to your father for your sake.

Are those eyes of hers still looking at you?

Or perhaps—