Japanese Osen - Nakedness Ok? I just read a cool comic and they talked about Japanese Osen - the public bath. Now in the book, it mentioned that people need to get in that bath naked and get relaxed. If you're not naked you're not allowed in. Its a very strict rule. I wanted to know who the Osen caters for? Is it for elderly people, honeymoon couples - who usually goes there? Is there anything that foreigners should know before going to 'Osen'?