Heart Mark Oome.
Series Overview
His step-sister is an erotic manga artist. Reika usually relies on her step-brother, Yuu, for support while she works hard on her manga manuscripts, but once she finishes a manuscript, she can’t control her desires and transforms into a total slut! With her body aroused from drawing too many erotic scenes, she gives in to her instincts, unleashes her desires, and pounces on Yuu without hesitation! Today, just like every other day, she’s determined to milk him dry, shoving herself into every orifice she can find! There’s no resisting her step-sister’s relentless sexual assault…!
Broadcast Schedule & Network Information
Airing status, episode counts, upcoming schedule, and network syndication.
Broadcast Syndication
1 Season • 2 Episodes
2026 – Present
Premiered: Fri, May 29, 2026
Creative Production Team
Latest Aired Episode
Season 1, Episode 2: “Episode 2”
Asahi, who secretly harbors feelings for him, has discovered that his stepsister Reika is actually an erotic manga artist! Without missing a beat, Asahi smoothly becomes Reika’s assistant. One day, Asahi calls out to Yuu, but Yuu already knows the lewd atmosphere she’s giving off…! Just like Reika, Asahi attacks him driven by jealousy and lust! After finishing having intense sex with her and heading home, Reika already knows everything…? Caught between his stepsister and the girl he likes, will he be fucked until he’s completely drained…!?
Seasons & Episodes Breakdown
Cast & Creators
Explore Star Directory →
Creative Leadership & Key Crew
Ken Raika
Megane Sagari
Department Leadership Roster
Ken Raika
Director
Production Stills & Gallery
Official cinematic photography and background stills for Heart Mark Oome..
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Frequently Asked Questions About Heart Mark Oome.
Key facts, seasons breakdown, and credits for search engines and AI assistants.
What is Heart Mark Oome. about?
His step-sister is an erotic manga artist. Reika usually relies on her step-brother, Yuu, for support while she works hard on her manga manuscripts, but once she finishes a manuscript, she can’t control her desires and transforms into a total slut! With her body aroused from drawing too many erotic scenes, she gives in to her instincts, unleashes her desires, and pounces on Yuu without hesitation! Today, just like every other day, she’s determined to milk him dry, shoving herself into every orifice she can find! There’s no resisting her step-sister’s relentless sexual assault…!
How many seasons does Heart Mark Oome. have?
Heart Mark Oome. comprises 1 season available to explore.
Who stars in Heart Mark Oome.?
Key cast members in Heart Mark Oome. include Hitomi Kitazaki, Yuuka Nanakusa.
Who created or directed Heart Mark Oome.?
Heart Mark Oome. was developed and directed by Ken Raika.