Kiichi Someya

The story starts with Kiichi aged three, living with his parents. After they are murdered he runs away and lives with some homeless people for a while, he ends up surviving in the woods for nearly a year before being returned to his grandparents.

In the second arc of the series, Kiichi teams up with an much more verbal and intelligent friend. They attempt to save a girl from classroom bullies.
It is later revealed that her father forced her to work as an prostitute. Political pressure keeps the police from doing anything about it, and they are forced to stage a hostage crisis in front of the capitol building to gain media attention.

Kiichi VS takes place ten years later and finds Kiichi running a large organization dedicated to improving the world.