My secret crush Asahi discovers that my step-sister Reika is actually a hentai mangaka! Flowing naturally from that revelation, Asahi becomes Reika's personal assistant. One day she calls Yu over, but he immediately recognizes the thick, horny atmosphere she's emitting! Driven by jealousy and overwhelming desire, Asahi pounces on him just like Reika! After getting drained by her, he returns home only to find that Reika already knows everything...? Trapped between his aggressive step-sister and his beloved crush, will he be fucked completely dry...!?