Some are, some aren't. Busy exists in Shibuya (or other busy junctions) for instance will be clean-enough but not that clean. There's an insane amount of people

Some are, some aren't. Busy exists in Shibuya (or other busy junctions) for instance will be clean-enough but not that clean. There's an insane amount of people passing through after all. Small stations even in central Tokyo -- yes, they will be this clean.