Kitsune Hideki

This is the story of a young mechanic working in a futuristic city that is dependent on water energy to survive. Our hero Hideki finds a mysterious machine that gives him incredible power. This power mist be kept from the city government or it could be used to take out poor enviroments full of people. Will he learn how to use the machine and save the cities future?
Ps. This story functions as a sort of manga/Japanese type world where humans use jujitsu and bending in their daily lives.