With the Devilish Her…

With the Devilish Her…

Released Aug 2026

“With the Devilish Her…” is a cohabitation romance simulation game. You will spend three weeks living together with your friend’s younger sister, Marina. Her alluring charm will draw you into a heart-pounding shared life filled with temptation!

85% positive · 380 reviews
Not yet
Recently released, post-launch plans unclear
Low confidence
Recently Launched
Not yet
Recently released, post-launch plans unclear
Low confidence
Recently Launched

Where to buy

Steam $16.99
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Evaluation

With the Devilish Her… launched on Steam on August 19, 2026. The developer posted an official release announcement on August 20, 2026, and followed up the very next day (August 21, 2026) with a bug fix patch addressing launch issues such as the English version failing to start, abnormal outfit overlapping, and character portrait display problems. The game appears to have shipped as a complete cohabitation romance simulation — there are no announced DLC, season passes, or future content roadmaps visible. However, because the game only released two days ago, there simply hasn't been enough time to know whether the developer intends to add more content down the line. The rapid bug fix response shows the developer is actively engaged with the product post-launch.
Evidence
Official Steam launch announcement for With the Devilish Her…, describing the game's features including dress-up systems, animations, and an Endless Mode unlocked after completing the main story.
news post · Aug 20, 2026 source content shipped
high
Day-two bug fix patch addressing English launch failure, outfit overlap issues, and portrait display bugs — developer is actively responding to player feedback.
news post · Aug 21, 2026 source development ongoing
low

Details

Publisher
akaeroCore
Achievements
—
Platform
Windows
Controller
—
Steam Deck
Playable
Players
Single-player

About this game

Marina, your friend’s younger sister.

After losing her parents, she has moved between the homes of various relatives.

At your friend’s request, you will take care of her for the next three weeks…

During these three weeks of living together, you will gradually find yourself falling for this charming woman.

ღ Smooth Live2D adult animations with erotic performances, fully voiced in Japanese ღ

Ultra-deep penetration reaching the womb, with everything clearly visible from the bulging lower abdomen to detailed uterine cross-sections.

A progressive adult experience: foreplay → increased body sensitivity → desire reaches its peak ♥︎

ღ Dress up Marina freely! Over a million possible outfit combinations ღ

Create unique outfits according to your preferences. You can not only sell them but also dress Marina in your creations.

From outerwear, bottoms, underwear, accessories, shoes, to hairstyles—dress up your favorite Marina just the way you like!

ღ Endless Mode! Experience cohabitation and intimate moments with Marina after the ending ღ

Fully enjoy the cohabitation simulation—Endless Mode unlocks after the true ending!

More events, and… the development of additional adult gameplay features!

ღ Character ღ

▲Marina

Orphaned, your friend’s younger sister,

at your friend’s request, she temporarily moves in to live with you.

Her alluring charm makes her someone who makes every man’s heart race at the sight of her.

★ Game Features ★

  • A wide variety of clothing and accessories, with over a billion possible component combinations

  • Number of models: 9 | Number of animations: 3,140 | Base CGs: over 70

  • Endless Mode: Experience a heart-pounding adult cohabitation life after completing the main story

Last evaluated Aug 21, 2026
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