7 days on a deserted island where I want to have sex with my favorite mother! (RJ01350343)

April 3, 2025

Game Detail

Introduction & Synopsis

Introduction
Originally, I started this game as a “Yakyuken” simulation that could be played in a few minutes for a few hundred yen, but as I added mini-stories, I ended up adding more content than I had originally envisioned and decided to sell it as a role-playing game. Basically, a mother and her child repeat the process of exploration, yakyuken, erotic events, exploration, and so on for 7 days on a deserted island, which can be played for about 1.5 to 2 hours.
We hope you will purchase the game. If you purchase the game, please give us a review, which will help motivate us to create the next version of the game.

Synopsis
A cruise ship carrying a mother and her child on a trip encounters a big storm and capsizes.
Miraculously, however, the two mothers and their children are not seriously injured and are washed ashore on an unknown island.

For the son, it was a once-in-a-lifetime opportunity to be alone with his beloved mother and possibly have sex with her.
The son is busy searching for a deserted island to survive with his mother,
He sets up a baseball fist and demands various erotic things from his mother.

Touching, hand jobs, blow jobs, masturbation, tit-fucking, barebacking, …,
The mother, who at first was a bit reluctant, finally…?

After seven days of survival on a deserted island, the two choose a life of their own…?

Game Contents

This is a simple exploratory RPG in which the player controls a son on a deserted island where he and his mother have drifted ashore.
At the end of the day, the son plays Baseball Fist with his mother. If you win the game, you can proceed to the day’s erotic event.
If you choose the latter mode, you can win the rock-paper-scissors game with a high probability, so there is no stress. Even if you lose the game, you can try again and again.
In Yakyuken, you can choose which clothes you want to take off first, so you can enjoy a variety of outfits.
There is an action RPG in the middle to the end of the game, but there is no troublesome leveling up.
There are 9 erotic events in total, 8 mother-child incest + 1 NTR, but you can avoid NTR by the ending you choose.
The erotic events include sounds (with phase adjustment) such as panting, breathing, climax, penetration, piston, gushing, squirting, ejaculation, etc., according to each scene.
There are 22 basic CG pictures and more than 70 difference pictures.
There are 3 endings in total.
The estimated time to complete the game is about 1.5 to 2 hours.
　The estimated time to complete the game is about 1.5 to 2 hours. If you want to see the rest of the endings, it will take about 20 minutes more.

Introduction with images

A cruise ship carrying a mother and her child on vacation encountered a big storm and capsized.
They were washed ashore on an uninhabited island in the middle of nowhere…

The son and his mother are on a quest to find a deserted island (beach, jungle, deep in the forest, etc.) to survive!

Clever story structure
Material gathering, action RPG, etc.

The son is in a unique situation where he can be alone with his mother and have sex with her!
He sets up a baseball fist and demands all sorts of erotic things from his mother!

And after 7 days of survival on a deserted island, what will they choose to do with their lives?

Basic erotic CG: 22 pictures + more than 70 difference pictures
Including belly-button sex, mother’s milk, NTR, etc.! (NTR can be avoided)
Multiple endings (3 in total)

Mother’s standing and baseball fist features

There are multiple types of standing pictures of mothers. In YAKYUKEN, the mother can choose which clothes to remove first, so it is possible to make her look indecent, for example, with her jacket on and her skirt and panties off.

Distinctive features and specifications

You can select the winning rate of Yakyuken (normal or win-rate-up mode). You can change the mode at any time from the menu options.
You can name the son (you) and the mother.
The game has multiple endings, and the URL for each ending will be available on the support site (URL is in “Readme.txt” of the product version).
When you clear the game, you will be able to select the “Recollection Room” from the title screen. In the reminiscence room, you can watch all erotic events and play Baseball Fist in each costume.
You can proceed to the reminiscence room at the beginning of the game, and you can open all the erotic events and baseball fist before clearing the game (even if you open the room, it will not interfere with the game you are playing).
You can set ON/OFF of the shaking of the erotic CG of the erotic event from the menu.
You can also adjust the volume and other fine controls from the menu.
Customize gamepad/keyboard buttons and key layouts from the menu.
Screen resolution: 1104x624px (≒16:9)

Precautions

This game is created by RPG Toolkit MZ, and the operating environment conforms to RPG Toolkit MZ in principle (however, the author has confirmed that the game works only on Windows 10, so only Windows 10 is listed in the supported OS column).
Depending on your environment, it may not work properly. In this case, we will not be able to help you, so please be sure to check the operation with the “trial version” before purchasing.
In principle, saved data from the demo version cannot be transferred to the full version.
Please note that bug fixes and additional updates may be made without prior notice.
The images and movies on this page and the demo version are under development and may differ in some respects from the full version.
We plan to provide answers and hints on the support site as necessary for quests that are deemed too difficult or difficult to understand by many purchasers after the game has been sold. Please note that you may need to follow the “Free Plan” to view the contents.

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