Long ago, there lived a young man named Yosuke in the village of Shiiba in Hyuuga. 
"I want enough money and possessions to live a luxurious life without having to work" 
Yohei abandoned his job in his impoverished village, where only barnyard millet, oxtail millet and beans could be grown. He fled into the mountains, where one night he witnessed a strange sight. 
A blue ogre clinging to a large cedar tree split its back, began to shed its skin and quickly transformed into a red ogre. Yosuke stole the shed skin, wore it and began committing crimes in the village. 
However, when he tried to take off the skin, he couldn't get it off no matter what he did... 

(Source: Official Website, translated)

Onigara