From Great Big Story: Welcome to the lightning-fast world of robot sumo, where two robots battle it out for mechanical supremacy. But, keep your eyes peeled—robots that take years to build can be decimated within mere seconds. Robot sumo has developed into a furiously competitive sport in Japan, with participants spending years building their autonomous machines. Just ask Takahiro Ito, a robot designer and builder who spends 360 days a year working on his craft. It's a demanding sport that requiring extreme dedication, all for a few seconds of glory.