A suspense novel about the antisocial nature hidden beneath the charming face of high-school teacher Seiji Hasumi. A closed school community collapses under calculated control and violence.

When the ideal teacher’s mask slips, the classroom becomes a place of inescapable terror.

A horror mystery in which a transfer student at a provincial middle school is drawn into strange events surrounding the dead. The closed classroom atmosphere and chain of deaths build intense suspense.

Around the extra presence hidden in the class, everyday life begins to warp in silence.

A campus novel about students gathered in the Mechanical Control Research Club, known as KIKEN, at Seinan Electrical Engineering College. It briskly depicts making things, reckless projects, and friendship.

A noisy, risky, irresistibly fun youth story of engineering students begins to run.

A historical novel centered on the Battles of Kawanakajima and the age of Takeda Shingen and Uesugi Kenshin. Battlefield tension, strategy, and conviction unfold on a large scale.

Beyond the mist of Kawanakajima, human will rises above victory and defeat.

A novel about a fourth-grade boy investigating penguins that suddenly appear in town and the mystery of an enigmatic young woman. Scientific curiosity and the stirrings of first love expand into a summer adventure.

From a boy’s research notebook begins a summer leading toward the secrets of the world.