Heart Mark Oome.

Reika is a talented but perverted erotic manga artist living with her step-brother Yuu. While she works hard on her deadlines, she depends on him for daily support. Once a manuscript is complete, however, the pent-up sexual frustration from drawing countless lewd scenes erupts. Reika turns into a total slut, aggressively seducing and milking Yuu without restraint using her voluptuous body and skillful techniques.

In episode 1, Reika’s arousal reaches its peak right after finishing work, leading to intense, heart-mark-filled sex as she rides and drains him completely.

In episode 2, Yuu’s crush Asahi discovers Reika’s secret profession and becomes her assistant. Caught between his jealous step-sister and the equally lust-driven Asahi, Yuu finds himself overwhelmed and milked dry by both women in a steamy, competitive threesome situation.

Full of passionate paizuri, deep creampies, and endless “heart mark” ahegao moments, this OVA adapts Issa Miyamoto’s popular doujinshi series with high-quality animation from T-REX. Perfect for fans of aggressive onee-san, step-sibling incest, and heavy lewd content.