Basically, this manga follows Hibino Hareluya as he tries to "conquer the world" by dealing with the everyday punks on the street. Always ready to fight and always winning his fights, he just finds himself more and more into trouble. Along the way he surrounds himself with friends who are all very strong into their own unique way.<br><br>
(Source: Eternal Blue)

Hareluya Hibino has one ambition in life: to conquer the entire world! Despite his tough exterior, he’s not a bad person, and when push comes to shove, he’ll do his best to help those in need. Together with aspiring painter Kiyoshiro, Hareluya will take on whatever curveballs life may throw his way.
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(Source: Sentai Filmworks)

It is the manga Umezawa made before his very succesful follow-up BOY and which tells of the adventures of Hibino, delinquent son of God. God gets enough of his son's behaviour and sends him down to earth to better his life and test him. The outcome of this will determine the future of the world, because God won't have his son succeeding him if he doesn't better his life and will end humanity if Hibino fails.

Yamana Michiru