SERIES

Heart Mark Oome.

20261 Season

Animation

Your rating

Genre: Animation
Origin: JP

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…!

Where to watch

Region

Not available to stream in United States yet.

Details

Director: Ken Raika
Status: Returning Series
First aired: May 29, 2026
Studio: Bunny Walker, Lune Pictures

Time to finish

2 hrs

2 episodes. About 1 week at an hour a night.

Cast

Hitomi Kitazaki

Saigawara Reika (voice)

Yuuka Nanakusa

Asahi Hoshino (voice)

SERIES

Heart Mark Oome.

20261 Season

Animation

Your rating

Genre: Animation
Origin: JP

About

Where to watch

Region

Not available to stream in United States yet.

Episodes

0 of 0 watched

E1 · Airs May 29, 2026 · ★ 9.0
Episode 1
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…!
E2 · Airs May 29, 2026
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…!?

Details

Director: Ken Raika
Status: Returning Series
First aired: May 29, 2026
Studio: Bunny Walker, Lune Pictures

Time to finish

2 hrs

2 episodes. About 1 week at an hour a night.

Cast

Hitomi Kitazaki

Saigawara Reika (voice)

Yuuka Nanakusa

Asahi Hoshino (voice)

Heart Mark Oome.

About

Where to watch

Details

Time to finish

Cast

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Heart Mark Oome.

About

Where to watch

Episodes

Details

Time to finish

Cast

If you like this

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Episodes