est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
A woman's young son is kidnapped and the only clue to his disappearance is a note starting with the words "This is a quiz." What follows is a fast-paced and stylish whodunnit which leads chief investigator Kaoru Kiriko of the Special Investigation Team down a trail of increasingly perplexing riddles that all the while seem to mock the efforts of the police. Street-smart Kaoru may be the kidnapper's intellectual match, but as she gets closer to her mark, she finds herself becoming the hunted rather than the hunter. (Source: TBS)
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections