Tanmoshi HighSchool

I, Kimihiko Kimizuka, was once the assistant to Siesta, an ace detective as angelic as her name.

We met aboard a hijacked plane and, after three years of dazzling adventures, were eventually separated by death—or so I thought.

“Seriously, if you’re alive, just say so.”

Siesta reappeared before me as I returned to my everyday school life. And for some reason, she introduced herself as Shirogane Gekkka and dragged me into starting a Mystery Research Club.

Through club activities with our new member, Nagisa Natsunagi, pre-exam study sessions, the sports festival, the summer festival, and countless other events, I gradually reclaimed my youth—but at the same time, I couldn’t shake the feeling that I was forgetting something important…

■■■■ is already dead. That’s why he, and they—
This is the story of another possible outcome for "Tanomoshi".