It's not likely you will see this in a work or professional business environment, but I assure you this happens.
My wife's Japanese, and when we were dating, I would frequently see her and her friends grabbing each other's titties. Pretty sure I even have a few pics of this somewhere.
Anyway, I asked her about this, with hopes that it would lead to a three or foursome with her friends, but alas, they were not lesbians or even remotely bisexual.
Grabbing a boob or fondling/tickling a nipple is not out of the norm between Japanese females. At the same time, it does not indicate that they prefer to munch the carpet.