Ah? ...Yes, it was required. Some of our brethren, they... [...Hanyuu begins to busy herself with her laundry, fetching some of that fancy soap.] There were complications. And the few of us left had to protect the humans from them. It would do no good to insight panic while doing this, so when I was born...I was told to take a human form.

[Once, so long ago, she had another form. Once, but so long that it's beyond her reach.]