A grand-prize work by Takahashi Masaki for the Kita-ku Uchida Yasuo Mystery Literary Award. The title is confirmed in municipal and magazine records, but no standalone book under the same title could be verified.

Verified prize-work information is organized for bibliographic use.

This story became the starting point for a linked mystery series about a former magazine reporter who lost his sight and solves local cases through sharp hearing, memory, and support from others. Set against everyday life in Akabane, it foregrounds independence and humor rather than treating disability as spectacle.

A blind detective figure untangles small mysteries in Akabane.

A short mystery about conflict among teachers over a university recommendation, with falsified grades exposing a chain of past causes. Its core is the way goodwill and self-protection create consequences within the closed space of a school.

One grade sheet reveals a chain of past events involving teachers and students.