A school mystery centered on the clash between Maki, who reigns as the classroom queen, and Erika, the transfer student who threatens her position.

The queen never comes back.

A suspense novel in which a popular singer wakes up with no memory and discovers that the world believes she has died.

Why is my death on the news?

A PKO mystery set in a South Sudan camp, where a near-retirement warrant officer and a young sergeant investigate a string of thefts and missing ammunition.

Forty-two rifle rounds vanished from a locked space.

A historical mystery in which an ex-OL living between Edo and the present day uses modern science to solve crimes.

Scientific detection in Edo, with a double life.

A black-comedy action mystery in which assassins compete over the murder of a mayoral candidate.

The assassins' mayoral election begins.