Mizu-umi Kiku Hanabira

Name
The Chrysanthemum Petal Lake in named so for the hundreds of Chrysanthemum's that line the shores of the lake.

Legend
The legend of the chrysanthemum's is that they were planted by Hantei XVII, mourning the loss of his son. During the annual Chrysanthemum Festival most Emperors visit this lake to celebrate.

Major References

 * Legend of the Five Rings; Third Edition Page 303.