The guy has to come back home because he doesn't have a job there anymore. So when he comes back his childhood friend picks him up but he doesn't know that's his childhood friend. He had promised his childhood friend that he would write and come to visit but he never did. So the childhood friend grew up with a sour type personality or more delinquent. They guy realizes it's his fault that the guy ended up like that.
The guy has to come back home because he doesn't have a job there anymore. So when he comes back his childhood friend picks him up but he doesn't know that's his childhood friend. He had promised his childhood friend that he would write and come to visit but he never did. So the childhood friend grew up with a sour type personality or more delinquent. They guy realizes it's his fault that the guy ended up like that.