快樂快樂月刊
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.