Japanese toilets and bathrooms inside Japanese homes are always (always!) separate. Except in western style hotels.
I find this makes it convenient since someone can be stinking up the good old refinery, while you can still enjoy a nice scented bath without the trauma of being assaulted by someone's odious odors.
By day I am an educator and a cultural ambassador. By night I entertain notions of being a literary master. In reality I am just a family man and ordinary guy who works hard and loves writing just about as much as I love my family. Just about.