[Nyororin]

Just dress as if you care about how you look. Japan doesn`t have some sort of exotic dress code.

The white suit thing is right, but white *clothes* aren`t that weird. And really, I think anyone wearing a pure white formal *suit* around is going to be stared at just about anywhere in the world they are. I`ve seen people wearing white shorts with white shirts in the summer because it`s cool. Nothing strange about it.

The only thing I would pay attention to would be sleeve length. People usually don`t wear short sleeves before or after certain dates. If you don`t see anyone around wearing short sleeves, they`re probably not in season.