Mysterious Joker (怪盗ジョーカー Kaitou Joker) is a Japanese manga series written and illustrated by Hideyasu Takahashi. 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. There is nothing in the world that the mysterious phantom thief Joker cannot steal. He goes after one treasure after another in unpredictable capers with seemingly miraculous tricks.