When it comes to culture and entertainment, Japan has a rich history spanning ancient legends and sport to popular comics and video games.
Now a new generation of inventors is drawing on this culture to create sports with a 21st-century twist - helping players feel "superhuman" through technology or other special equipment.
She also created a comic book series based on the legend, in which a devil was tied to rocks and made to stop harassing the local people. The devil left a handprint on one of the rocks, making a "rock hand".
In "Bubble Jumper", players walking on stilts and wearing inflatable bubble protectors crash into each other like sumo wrestlers.
"Technology can improve and supplement human ability," said Isao Uebayashi, 38, a sports science researcher and an inventor of "Slide Lift". "Anyone can do 'drift racing' with this wheelchair," he said.
Equipped with special wheels, the motor-assisted wheelchair can be moved by "Slide Lift" racers in any direction, including in racing car-like drifts.