Mysterious Joker (Japanese: 怪盗ジョーカー, Hepburn: Kaitō Jōkā) is a Japanese manga series written and illustrated by Hideyasu Takahashi. The series was originally published as a one-shot, then later began serialization in Shogakukan's Bessatsu CoroCoro Comic Special, CoroCoro Comic, and CoroCoro Dragon manga magazines. An anime adaptation produced by Asatsu DK and animated by Shin-Ei Animation has aired in Japan since October 6, 2014. The series follows the adventures of a thief named Joker, who goes around the world stealing treasures with his apprentice Hachi, while avoiding traps set by the police.