Members of a mystery research club visit a remote island. Will a novel-like incident occur? Or will they just enjoy their vacation?
About
Story
The members of the Minamoto Academy University Mystery Research Club and Guest were being tossed about on a small boat. The boat is heading for "Seo Island," an uninhabited island in the Pacific Ocean within Japanese territorial waters. The purpose is a summer training camp for the Mystery Club, staying for three days and two nights at a Western-style mansion standing on Seo Island, commonly known as the Hizawa Mansion. How will the Mystery Club, Guest, and the other guests spend their time in this mansion?
Characters
Toru Ichimiya
Gender: Male Age: 21 years old Height: 180cm Appearance
- Blond hair
- Dark brown eyes Memo Fourth-year student / Faculty of Letters / President of the Mystery Club / Son of the Chairman
Nagi Nanami
Gender: Male Age: 21 years old Height: 172cm Appearance
- Black hair
- Black eyes Memo Fourth-year student / Faculty of Letters / Vice President of the Mystery Club
Shohei Tarumi
Gender: Male Age: 20 years old Height: 178cm Appearance
- Light brown hair
- Dark brown eyes Memo Third-year student / Faculty of Law
Minato Fujishiro
Gender: Male Age: 20 years old Height: 170cm Appearance
- Black hair
- Narrow black eyes Memo Third-year student / Faculty of Law
Hanon Tachibana
Gender: Female Age: 19 years old Height: 155cm Appearance
- Ash gray hair, very short cut
- Brown eyes Memo Second-year student / Faculty of Letters / Not participating in the Seo Island camp / Says she's looking forward to hearing the stories!
Makoto Shiono
Gender: Female Age: 37 years old Height: 160cm Appearance
- Dark brown hair, shoulder-length, tied in a single ponytail at the back
- Black eyes Memo Advisor to the Mystery Club / Head of the Psychology Lab / Associate Professor / Specialty is Cognitive Psychology / Not participating in the camp because she's staying in her lab
Gender: Male (Cat) Age: Unknown Height: About 6 apples tall Appearance
- Calico pattern
- Yellow eyes Memo A simple calico cat that has taken up residence in the Mystery Research Club room. It's unknown since when he's been there or who brought him in. The greatest mystery in the Minamoto Academy University Mystery Club / Currently watching the clubroom.
Intro
The small boat moves forward, kicking up white waves.
Brushing back his blond hair fluttering in the sea breeze with his right hand.
Look, everyone. That island you see over there is our destination, Seo Island.
Resting both arms on the railing.
Heh, that island has quite an atmosphere.
Staring intently at the island floating on the sea.
Indeed. That cliff section over there really looks the part.
Looking back and forth between the map of the island in his hand and the island itself, pointing.
It looks like the Hizawa Mansion is around there.
Release Date 2026.08.29 / Last Updated 2026.09.06
