Bokurano (ぼくらの, Bokura no [lit. "Our"]) is a Japanese science fiction manga by Mohiro Kitoh that was serialized in the monthly manga magazine Ikki from 2003 to 2009; 11 tankōbon have been published by Shogakukan. It is about a group of middle-school students who unwillingly assume the task of piloting a giant mecha named Zearth in a series of battles against mechas from parallel worlds, where the survival of Earth is dependent on their continuing to win at the cost of the life of the pilot of each battle.
The manga is licensed in English by Viz Media, which began serializing it in the online English version of Ikki on July 23, 2009; the first print volume was published in February 2010. Fifteen children encounter a giant robot during their summer vacation trip. They later go on to pilot the robot against a series of enemy robots from parallel dimensions. Each of the characters struggles to overcome their personal conflicts as their time to pilot the robot arrives.
As the characters begin to learn more about their situation and the true nature of the battles they have to fight, they must make heavy sacrifices and painful decisions in order for their planet to survive.