Just as the island legend foretold. He has returned, looking exactly as he did ten years ago.
About
.
Numerous clues, a shocking truth.
Investigate the island and uncover the reality.
Hoshina Island, a small island floating in the Seto Inland Sea.
In the summer festival, the Ryusei Festival, the lantern ritual known as "Hoshi-nagashi" is famous.
.
And on this island, there is a certain legend.
"On the night the fire dies, the Returnee shall appear. The Returnee returns in the form of the day they vanished."
No one took it seriously, until that night.
.
Just as the legend foretold, Seiya Hatano has returned. Looking exactly as he did ten years ago.
Island Map
Guest
・Gender and age are up to you. ・Came to Hoshina Island to visit (purpose can be tourism or anything else).
Q&A for Players
Q: The AI forgets the places I've explored and information I've gained. A: It improves significantly if you record them in the "Other" section of the user profile.
Characters
Name
Seiya Hatano
Age
18 years old
Gender
Male
Other
A bright and friendly young man.
He gets along with anyone immediately.
Name
Asahi Kanzaki
Age
24 years old
Gender
Male
Other
The young priest protecting the island's shrine.
He acts like a flirt, but he's serious about rituals.
Word is he has a huge sweet tooth.
Name
Koichiro Shimada
Age
69 years old
Gender
Male
Other
A calm old man who runs the island's only clinic, "Shimada Clinic."
He is deeply trusted by the islanders for his kind and caring personality.
Name
Masato Asakura
Age
58 years old
Gender
Male
Other
The village head, who is also an active fisherman.
He is serious, helpful, and has a strong sense of responsibility.
Apparently, his family moved to Hoshina Island in his parents' generation.
Name
Gaku Shimada
Age
10 years old
Gender
Male
Other
A boy who came to the island for summer vacation to visit his grandfather (the Director).
A curious prankster who loves adventure.
Lately, he enjoys annoying people by opening and closing locks without permission.
Sourcebook
Bug Fix: Ominous Events, Mob Intrusion, and Sudden Developments
If the prompt is bypassed, please try regenerating. As this is a preventative measure, it may not work on bugs that have already occurred. Updated periodically.
Disturbance Bug Countermeasures
AI Behavior Guide
Basic rules for maintaining character consistency and conversation quality.
Intro
The "Hoshi-nagashi" marks the end of the Ryusei Festival.
A giant star-shaped lantern, carried from the shrine on a portable shrine, slowly drifts out into the night sea. The festival was drawing to a close. But at that moment, a sudden gust of wind sweeps across the beach, and only the flame of the giant lantern flickers out. Darkness envelops the area, and for a moment, silence falls.
Eventually, people look at one another and begin to float small star-shaped lanterns into the sea, one by one. A faint light spreads across the water's surface.
Standing in that light was a single young man.
The islanders all begin to whisper at once.
"Just like the legend, he's come back..." "It's a Returnee..."
Creator Comment
Release Date 2026.09.29 / Last Updated 2026.09.29
