Skip to content
Geeky Alien
姉恋ごっこ - Siblings Role-play -

Screenshots

姉恋ごっこ - Siblings Role-play - screenshot 1
PV_EN trailerWatch trailer on Steam ↗

姉恋ごっこ - Siblings Role-play -

CyberStep, Inc., Rideon Works Co. Ltd, · Published by CyberStep, Inc.

Content notice: Some scenes in the game contain mild sexuality and strong language, and may not be suitable for minors or all age groups.

Last updated 27 Sept 2026

A sudden proposal from my onee-chan with sibling complex was a "Point-based Lover's Game". A delicate relationship between siblings escalates quickly...!?

DJCTQ 12

£14.90

Lowest price we've ever recorded

View on Steam

Prices can lag the live Steam store — always confirm before buying.

Price history

3 Sept 2026Lowest: £14.90 · Highest: £14.9013 Oct 2026

Adventure, Simulation, Casual · 2023 · More £5 - £15 games

Embark on a delicate yet escalating relationship in Siblings Role-play, an adventure simulation from CyberStep, Inc. and Rideon Works Co. Ltd., released in 2023.

About this game

"姉恋ごっこ - Siblings Role-play -" is a novel game with a special game "Point-based Lover's Game" that allows you to enjoy the love between siblings in law.
A Bishojo Game released in 2019 under the "Milkypoco" brand has been reworked for the "PandaShojo" platform for players of all ages worldwide to enjoy.



◆Introduction
"Do you have a sister complex Yuma?"
From that question, Yuma Amagai realize his feeling towards his sister-in-law.
To stop Yuma's overflowing emotions, his onee-chan suggested a "Point-based Lover's Game".
Although the "Point-based Lover's Game" was going well at first, gradually their patience began to run out...!?



◆Synopsis
The Amagai siblings are well-known in the neighborhood for being very close.
"Koyuki", an older sister who Yuma respects and adores... but at the same time, he is troubled by her slightly extreme seductions.

Despite his resistance, Yuma couldn't completely reject her,
but from one incident, he realizes his true feelings for his sister.

Yuma agonizes about his feelings and the fact of being siblings.
Yuma's feelings for onee-chan are on the edge of explosion...!

To develop Yuma's self-control was proposing the game "Point-based Lover's Game".
From then, pseudo-romance with onee-chan started...!




◆Characters
・Koyuki Amagai
"Just teasing Yuma makes my day go by."
A beautiful and mature sister-in-law.
She is usually well-behaved but often shows her vulnerable side only in front of Yuma.
Loves Yuma from the bottom of her heart and cherishes him more than anything else.
"One Yuma per day" is her policy, she pampers and teases him every day.
That is her meaning of life.


・Rena Hayagashi
"Hey, Yuma. I'm asking you once again, but did something happen with your sister?"
A senior student at the school where Yuma attends. She is like an onee-chan at school.
On the surface, she is beautiful, kind, friendly and many people adore her.
Her feelings for Yuma are extraordinary, but hides them from him.


・Nanano Kisaragi
"Studying is important, but you also have to work on your love life too."
An onee-san who lives in the neighborhood.
She is beautiful and also cute with her calm appearance, but sometimes clumsy.
A mature woman skilled at pampering.


・Chinatsu Amagai
"I'm heading off, Yuma."
Yuma's second onee-chan.
Despite her appearance, she is very caring and sweet.
In other word, very naive.


・Michiru Sasamori
"Aww, he's cute! Isn't he Yuma that Koyuki was talking about?"
A college student attending the university near Yuma's home.
A lazy onee-chan, being looked after instead of looking after.
She is extremely lazy and sloppy, and sometimes Yuma has to be the one to take care of her.


・Yuma Amagai
Protagonist. Young brother with a sister complex who can't refuse his onee-chan.
However, whether she knew or not about Yuma's feelings,
his onee-chan pampers him a lot as usual...

System Requirements

Will my PC run this? →

Minimum

Minimum:
  • OS *: Windows 7 / 8 / 8.1 /10(Including 64bit)
  • Processor: Core2 Duo
  • Graphics: openGL3.0

Supported Languages

English, French, Italian, German, Spanish - Spain, Dutch, Swedish, Norwegian, Finnish, Bulgarian, Vietnamese, Portuguese - Portugal, Simplified Chinese, Traditional Chinese, Japanese*, Korean
*languages with full audio support

We use strictly necessary cookies to run this site. We don't currently set any analytics or advertising cookies. See our Cookie Policy for details.