Screenshots
Watch trailer on Steam ↗With the Devilish Her…
まろん☆まろん · Published by akaeroCore
Content notice: All characters are over 20 years old. This game contains: BDSM, sex toys, oral sex, breast sex, and pregnant sex. All interactions are consensual acts between adults.
Very Positive — 87% positive (366 reviews)
Last updated 28 Sept 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!
£15.25
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Price history
Indie, RPG, Simulation · 2026 · More £15 - £30 games
Discover what it's like to live with Marina for three weeks in "With the Devilish Her...," an indie RPG that blends cohabitation with心动的诱惑. Experience a heart-pounding journey filled with romance and unexpected twists.
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
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: Windows 10 (64-bit)
- Processor: Core i5-8600
- Memory: 16 GB RAM
- Storage: 20 GB available space
Recommended
- Requires a 64-bit processor and operating system
- OS: Windows 10 64-bit
Supported Languages
*languages with full audio support
Latest news
Patch NotesOfficial
Update Announcement (2026/08/24)
Thank you all for your ongoing support and suggestions! To provide a more polished experience, we have implemented the following optimizations and bug fixes based on player feedback. Bug Fixes: Overall game performance optimization Live2D performance optimization for H-scenesRead full article on Community Announcements (akaeroCore)Patch NotesOfficial
Update Announcement (2026/08/21)
Thank you all for your ongoing support and suggestions! To provide a more polished experience, we have implemented the following optimizations and bug fixes based on player feedback. Bug Fixes: Fixed an issue where the English version could not launch properly Fixed a bug causing outfits to overlap abnormally Fixed character portrait display issuesRead full article on Community Announcements (akaeroCore)AnnouncementsOfficial
With the Devilish Her… officially released today on Steam!
“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!❣ About 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.❣ Dress up Marina freely! Over a million possible outfit combinations ❣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!❣ Game Features ❣A wide variety of clothing and accessories, with over a billion possible component combinationsNumber of models: 9 | Number of animations: 3,140 | Base CGs: over 70Endless Mode: Experience a heart-pounding adult cohabitation life after completing the main story❣ Play Now ❣To learn more about With the Devilish Her…, chat with other players, or report any issues, feel free to join our Discord server! ❣ Follow akaeroCore ❣ X(Twitter) Discord Facebook YoutubeRead full article on Community Announcements (akaeroCore)
