It’s kind of late, but why is Subaru still wearing his one-and-only tracksuit? Does he not have any other clothes? What happens when he does laundry? We don’t see him naked!

In fact, other characters are all wearing the exact same clothes or have multiple sets of the same clothes.

The only explanation I can think of - in Subaru’s case at least - is that someone casts laundry magic on him regularly.