Synopsis:

August, 2004.

Shikinejima — a secluded island that only a few hundred people call home.

Fifteen-year-old Itsuki Amazawa has come to visit the island for the very first time.
At his adoptive mother's childhood home, he and his newly met cousins pass the summer days in peace and quiet.

That is, until Itsuki learns the truth about the island...

Strange incidents known to the locals as "Shikinejima Vanishings" have been occurring around the island.
And deeply entangled in these puzzling happenings are people that Itsuki holds dear.

Will he be able to uncover the truth and save those he cares about?
　
　

Game Outline:

"The Culprit Is One of Us"

Your objective is to investigate this insular island and expose the one responsible for the incidents.
As you are also a suspect, however, you will find yourself under the scrutiny of others.

Unravel the mystery before time runs out by speaking with the suspects to gather clues and deduce the truth.
At the same time, you must clear your own name by gaining trust from those around you.

Fail to earn enough trust before the end and you may find yourself painted the villain...

Product Version Distribution Guidelines

Murder Mystery Paradox: Fifteen Years in One Summer" is a mystery adventure game
This is a mystery adventure game that can only be played once in a lifetime.

If you wish to distribute a video of this game, please include the words "Spoiler Warning" in the title.
The video distribution of this game is limited to PROLOGUE through CHAPTER 1.

In addition, we will not accept posts containing spoilers on social networking sites such as X, Instagram, Facebook, etc,
If you are posting on social networking sites such as X, Instagram, Facebook, etc., and include spoiler content,
Please use services (fusetter, etc.) that prevent spoilers.

Thank you for your understanding and cooperation.