I bet the Japanese tend to leave their rented apartments in pretty good condition. Regular wear and tear, but none of the uncaring neglect and abuse discussed in this thread.
Tenants should either post insurance or a sum sufficient to cover damages but not two months rent.
I think thats perfectly reasonable. And if landlords cant accept that, then they shouldnt be renting out in the first place.
If you dont trust tenants, any money they could post as surety doesnt really matter.
A better maintained and cleaner apt the likes you’ve never seen. Though the non Japanese tend to not care as much and tend to be trouble.