Assassin and Sister

The publisher declares adult content on Steam. Your mature-content setting is covering the art.

Developer: ASOBI
Released: Jun 26, 2026
Tags: Action

View on Steam

Where to buy

Steam

Buy on Steam

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Free demo

Steam lists a free demo for this game.

The demo on Steam ↗

What owning this involves

No cloud saves · The store does not back this game's saves up — they live on the machine you play on.From the store listing

Only what the store discloses. Nothing listed here means the store disclosed nothing — not that there is nothing to disclose.

Features

Single-player
Family Sharing

From the game's Steam store page.

Languages

English
German
Japanese
Simplified Chinese
Traditional Chinese
Spanish - Latin America
Korean
Russian

Steam lists 8 languages.

Age rating & content

DEJUS 18 · NudezThe rating board's own rating, as Steam relays it
IGRS BANNEDThe rating board's own rating, as Steam relays it
Some Nudity or Sexual Content · Adult Only Sexual Content · Frequent Nudity or Sexual Content · General Mature ContentSteam's content descriptors, as the developer answered them
The game contains some naked and pornographic content, All characters are over 18 years oldThe developer's note on the content, from Steam

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About this game

The developer's description, from the game's Steam store page.

THE UNCHOSEN HAS RETURNED...

Jade Kimiko has her friend Thea Summer over as she's preparing for New Year's Eve. Victor Ray wanders in and begins groping Jade's tits right in the kitchen while Jade acts like there's nothing unusual about it. When Victor leaves, Thea asks what that was all about and Jade confesses that she's been his free use stepsis.... Embark on a journey to save the world in this bullet-filled adventure, born from our desire to mix the joy of open-ended exploration with a top-down shooter's juicy game feel.

ENGAGE WITH TIGHT COMBAT

shoot your way through handcrafted encounters supported by a crystal clear esthetic and crispy game feel. Overcome bosses in intense Bullet Hell battles