まんがタイム
is a Japanese four-panel manga series by Hinako Seta, serialized in Houbunsha's "Manga Time Jumbo" magazine. "Re-Kan!" was first published as a one-shot in "Manga Time Jumbo" December 2009 issue, and it later began serialization with the February 2010 issue. It has been collected into nine "tankōbon" volumes. A 13-episode anime television series adaptation by Pierrot+ aired in Japan between April and June 2015.