Just to help you on your search these are called Hakurei or Tokyo turnips. I haven't tried them raw yet, but I have a bunch needing to be used from this week that I might just try as nature made them.

I actually have the opposite problem--too much space! A blessing in some ways, but then a curse in that we tend to collect too much junk. I'm constantly in the fight to get things out of the house and keep them out, haha. But at least I have plenty of room for my kitchen gadgets. Not sure what would go first if we ever downsize...