A police mystery in which Ayaka Goma, nicknamed the 'calculator woman' for her obsession with numbers, is put in charge of a bank hostage crisis.

A special order lands on the calculator woman.

A social thriller in which a man protesting youth burdens and fiscal deficits becomes entangled in the kidnapping of a former prime minister's grandson and a ransom demand of one quadrillion yen.

The demand: a rewrite of the national debt, or one quadrillion yen.

An impossible-crime mystery in which a present-day boy's death appears linked to a case from 16 years earlier, challenging a seemingly airtight alibi.

Was the killer already in prison?

A thief mystery in which four childhood friends, now split between the police and burglary, reunite in their hometown and pursue the truth behind a death.

Even a thief can solve a mystery.