The Japanese wagtail is a small bird that is found throughout Japan's rivers and streams and is known for its distinctive bobbing tail.

Kawasaki is a major industrial city located between Tokyo and Yokohama, and is known for its heavy machinery and technology industries.

Death Note, created by Tsugumi Ohba and Takeshi Obata in 2003, is a popular manga and anime series that follows a high school student who gains the power to kill anyone whose name he writes in a special notebook.