I travelled in Japan in the 1990s. One would regularly see “salarymen” in suits, sleeping on park benches after drinking too much at business dinners.
They would be fast asleep with briefcases, cell phones, and presumably, wallets, watches, etc...
Cops might rouse them if it got past 8 AM, but otherwise, no one bothered them or stole from them while they were passed out.
One of the more remarkable things I observed in Japan was the presence of vending machines on the streets that offered beer and whiskey to anyone, no ID required, just the cash.
They smoke like chimneys and drink like fish.