Folk Legends
Tsuru no Ongaeshi
The bird then noticed the young man peeking in and said, "I am the crane that you saved. I wanted to repay you so I became your wife, but now that you have seen my true form I can stay here no longer." Then, handing the man the finished cloth, it said, "I leave you this to remember me by." The crane then abruptly flew off into the sky and disappeared forever.