Kōtarō Makaritōru!(コータローまかりとおる!, lit. "Kōtarō Breakthrough!") is a shōnen manga by Tatsuya Hiruta. It was published by Kodansha in Shōnen Magazine from 1982 to 1994 and collected in 59 tankōbon volumes, and was followed by two sequel series: Shin Kōtarō Makaritōru!, which ran from 1995 to 2001 and collected in 27 volumes, and Kōtarō Makaritōru! L which began in 2003 and is currently ongoing and collected in 8 volumes to date. All three series are boy's manga that revolve around fighting and fanservice. The early chapters feature slapstick and toilet humor, but as the series progresses the story arcs become more serious, with some characters dying.