Synopsis
Trouble when connecting a gamepad + supported languages + trial version
* On some operating systems, the touch action malfunctions when an input device like a gamepad is connected.
* If this happens, try disconnecting the device from your computer.
* If a software called Razer Synapse is installed, it seems that the malfunction may occur even if no device is connected
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In the trial version, you can play up to 10 days in-game.
The story progresses up to level 5, but after that it stops even if you raise the level.
* If you are considering purchasing, please be sure to check the operation with the trial version.
* English / Spanish can be switched in the full version, but it is not yet implemented in the trial version.
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The text can be switched between Japanese, English and Spanish.
Touch and Main Content
A 3D touching game with a high level of detail and freedom.
Experience real-time, interactive touches.
* Almost all of her body is touchable, from her head to the soles of her feet, including her armpits and cheeks.
Fucking…petting…rubbing…pinching…penetrating…slapping…bukkake…pouring…making her drink things…dressing her up…
You can enjoy touching her with all kinds of things…hands, tongue, meat stick…
Her hair moves, and the soft parts of her body such as breasts, butts, stomach, and cheeks are really soft.
Make her stand, sit, crawl on all fours, or lie down.
Posing can be changed seamlessly.
There’s a free camera that can be moved around, and a fixed camera to focus on specific parts.
Clothes
Of course, you can take all of her clothes off, but you can also strip her down part way and have sex with her partially clothed!
– Unbuttoned her shirt from the top, bottom, or middle…
– Pull her skirt down or lift it up…
– Expose her bra…
– Push each bra cup up or down…
– Pull her panties down or push them to the side…
– Pull down her stockings…
You can do all kinds of things!
Almost all of her clothes are cross-simulated with collision detection for more realistic texture.
Cross-section view and items
In the cross-section view, the contents of her abdomen are directly connected to her genitals.
Vagina, urethra, and anus — with training, each hole can be penetrated.
Her holes stretch and contract softly and realistically when she’s fucked!
★The shape changes according to the item inserted.
★If you fill her with liquids or solids, her belly will gradually swell until she looks pregnant!
Adult toys such as vibrators and dildos are also available.
You can adjust the strength of a toy’s vibration, and attach toys to your body for multiple penetration!
Vibrator-type toys come in all kinds of shapes to make her writhe!
Juices such as delicious (?) Papko, and aphrodisiacs are also available! Different types have different effects.
You can make her take Papko in her upper or lower mouth, or you can use it for bukkake.
The aphrodisiac comes in a syringe, so you can use it wherever you want on her body!
Play content and elements:
Squirting…
Pissing…
Breast milk…
Aphrodisiac…
Creampies…
Anal sex…
Oral…
Titty fucking…
Hotdogging…
Preggo belly…
Ahegao…
Cross-sectional and transparent views…
Urethral teasing…
Little titties/big boobs…
Shaved pussy / landing strip…
And more…!
Characters
Sakura (little sister)
The protagonist’s kohai.
She very polite, proper, and mature.
By chance, she becomes the protagonist’s younger sister through a hypn*sis app.
After school, Sakura and the protagonist work as insurance clerks in the school infirmary.
(Voice: Kurumi Miru)
Protagonist (older brother)
The protagonist of this game.
He has a secret crush on his kohai Sakura, but he can’t seem to approach her or make any progress.
By chance, he makes Sakura-san his younger sister using a hypn*sis app.
He and Sakura are assigned a strange afterschool job called “insurance clerk.”
(Text: English / Voice: Japanese)
| Circle | BouSoft |
| Tags | R18, Simulation, Voice, Music, Animation, Application, Chinese Simplified, Chinese Traditional, Japanese, English |
| Price | 3,300JPY |
Editorial Review
This is a mobile-oriented 3D simulation focused on real-time touch interaction with a taboo incest premise, positioned as a freemium title with substantial trial-version gatekeeping. The work competes in a crowded subgenre of interactive touching sims that prioritize tactile feedback and character responsiveness over narrative depth—a category that has become increasingly common on DLsite as touchscreen gaming infrastructure has matured.
The core appeal rests on granular interaction mechanics: the synopsis emphasizes “high level of detail and freedom” in touch controls and real-time responsiveness, suggesting the developers have invested in hitbox precision and animation variety rather than traditional visual novel branching. The presence of voice, music, and animation as primary tags confirms this is asset-heavy in production values. Multilingual support across Japanese, English, Spanish, and Chinese (both simplified and traditional) indicates a calculated push toward international markets, which remains relatively uncommon for incest-focused titles at this scale of distribution.
The trial version generosity—ten in-game days with progression to level 5—is standard practice for DLsite simulation releases, allowing genuine assessment of mechanics before purchase. However, the technical caveats about gamepad compatibility and Razer Synapse interference suggest this is a PC port of mobile code, which sometimes introduces compatibility friction.
The truncated synopsis (cutting off mid-sentence at “Almo”) hints at documentation issues, raising minor questions about polish and post-launch support, though this may simply reflect translation workflow rather than fundamental product quality.
Best suited for players who prioritize interactive tactility and character responsiveness over narrative stakes, and who can tolerate incest framing. This is solid genre execution within its niche—worth the trial download if taboo premise and hands-on simulation mechanics appeal to you, but not a work that transcends its category conventions.
Official English version available ↓
Get “Hypn*sis App Puts Little Siste” on DLsite
English Version → Free TrialJapanese Original
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Related Tags:
R18 | English | Japanese | Application | Simulation
