Idaten Jump (IDATEN翔 / 韋駄天翔, Idaten Shō) is a Japanese manga series created by Toshihiro Fujiwara. It was serialized in Kodansha's Comic BomBom. The manga tells the story about a boy named Sho Yamato who loves mountain biking. It was adapted into a 52-episode anime series, produced by Aniplex and Trans Arts which aired from October 1, 2005 to September 30, 2006.
Sho Yamato is a 5th grader who enjoys Mountain Terrain Biking (MTB). He always practiced at the "X-Zone" (a place Sho's dad, Takeshi built) with his friends Kakeru Sakamaki and Makoto Shidou while riding on his dad's "Flame Kaiser". One day, he was challenged to an MTB for the ownership of the X-Zone. But suddenly, black smoke suddenly covered the ground around them, and they were sent to another world that's also called the "X-Zone."