Advent Games – Oniichan Hentai

The Authentic Oniichan hentai experience where you live together with a person you affectionally call your little “Sister” and she refers to you as “Oniichan” ─ Living Together!

Meet your love interest (nameable). She’s referred to you all her life as Oniichan (relationship changeable). Affectionately, you also call her your little Sister (also changeable)!

You cohabitate in a small studio apartment. You’ll have to get along in this small area where you’ll spend a lot of time together. Through interacting with her, you build up a relationship that’s based on trust, friendship . . . and more! Talk to her and find out her favourite topics, play video games, and take her with you on day trips. Through your actions, she can come to trust you more, and, of course, you can also build her sexual attraction toward you. But be warned! You can also lose her trust in you.

Living Together! is a laid-back game intended to be played with one hand. Please enjoy this simple Oniichan game.

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The Setting

You live in a “1k Apato”, a Japanese-style studio apartment, meticulously modelled after the real thing and rendered in 4k resolution. It is very small, but it has all the amenities you need to survive.

Interact with your Imouto

Through various dialogue options, you can interact with Imouto. Talk to her, find out her favourite topics, drink, play a game, watch some TV or streaming service…, and more!

Manage Your Lives

Set a budget, keep the house clean and the larder stocked. This will keep your little Sister’s life the most stable. Depending on your daily routine, you will be home at once at different times.

Key Features In Living Together!

imouto living together oniichan hentai close up of a girl with dialogue options — Interact with Imouto. Talk, play games, have a drink, and so on.

Living Together Oniichan Hentai Incest Porn Conversation Result — Having conversations with Imouto will allow you to bond with her.

Living Together Oniichan Hentai Ingame Still of a girl sitting in a living room — YourImouto will be minding her own business in the evenings, until you choose to interact with her.

Living Together Oniichan Hentai Ingame Still of a Smartphone — Your smartphone has a number of useful apps!

Keep track of your little Imouto’s menstrual cycle…forher health, of course.

oniichan hentai living together pool imouto backside climbing out of the pool wearing bikini — Take Imouto out to bond and make happy memories.

Believably beautiful little sister, rendered in high-poly 3D. She could be real.
Fully simulated little sister, with more than 50 variable psychological metrics like interests, mood, lust, sexual interest, and more. She IS real.
Little sister can adopt, to my own best estimates, more than 30,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 (that’s 30 with 49 zeroes) possible personas. They are seeded so remain believable.
Build Trust and Attraction through a deep dialogue system and actions, lose her trust and sexual interest in you by messing things up.
Spend leisurely days with your little sister, talking, flirting, bathing and potentially having sex with her — if she trusts you enough and is attracted to you.
Get closer together, really…close…together.
Be a creep and spy on her as she bathes or uses the toilet. Be careful; you might get caught!
Beautiful “1K Apato” Apartment with day-night cycle.
Energy, Time, Money and Household management and other systems added and planned!

Adult Content in Living Together!

Implemented

Voyeurism

Peeing

Masturbation (Solo)

Nudity

Virgin

Sleeping Beauty

Planned

Partner Masturbation

Oral Sex

Vaginal Sex

Impregnation

Mutual Masturbation

Public Sex

Light Urination Fetish

Things That Will Never Be Implemented

Rape (she might tolerate a lot, but there will be no rape, ever, only a wholesome Oniichan).

NTR (there will be a ‘rival’ in some branches, but never any cheating).

Scat (if that’s your thing, I’m sure there are other games for you).

ALL characters depicted in this WORK OF FICTION are over 18 and NOT related by blood, even if expressly stated otherwise (unreliable narrator). All interactable characters were made with majority-aged, paid models. Living Together! features player-generated content. The developer is not responsible for this and does not endorse any player-made changes or inputs to the game. This is a work of fiction. Names, characters, places and incidents either are products of the developer’s magination or are used fictitiously. Any resemblance to actual events or locales or persons, living or dead, is entirely coincidental.