Yume no kichi (2002)

Eiji and Sen, two street toughs living in the Tokyo suburb of Machida, decide that they've made a few too many enemies in their hometown and head off somewhere safer to make a new start. They grab a train south, hoping to eventually reach Nagasaki, begging, scamming, stealing and occasionally working for what little they need to survive. On their trip, events cause them to start taking a long look at what they're doing with their lives, what brought them to their current situation, and where they're going to head next.