催眠アイドロップス

No, that's too tasteful. Akira is horny for step-mommy and step-sis.

Akira starts his day fapping to them before breakfast.
He surges dizzily at the sight of Manami's ripe, sweet full body and
Karen drapes herself in casual clothes that accentuate, not hide, her sexiness.
He can't take it. He's constantly ready to blow.

That's when Akira discovers an unusual eye dropper among his father's things.
His father had been a scientist -- who did very unusual science indeed --
and before his life was ended by that deadly anteanter attack in Honduras,
he had shipped a strange synthethic drug back home.

It was no ordinary eye medicine. These drops directly affected the brain-----changing everything for
the son who survived him: Akira the repressed. Akira the explosively aroused.

[From DLsite English]