Monthly Shōnen RivalMonthly Shōnen Rival.

Monthly Shōnen Rival (Japanese: 月刊少年ライバル, Hepburn: Gekkan Shounen Raibaru) was a Japanese monthly shōnen manga magazine by Kodansha that ran from April 4, 2008 to June 4, 2014. It was issued on the 4th of every month. As with Shueisha's Jump Square and Shogakukan's Monthly Shōnen Sunday, it was aimed at audiences in their late-teens and early-twenties.