Koyuki Azumaya

Koyuki Azumaya is one of the main characters in Sgt Frog.

Appearance
Koyuki has long teal/dark blue hair that is usually tied in a ponytail, fair skin and green eyes.

She often wears a bow to tie back her hair and instantly become a ninja.

Personality
Koyuki is very carefree, optimistic, and eccentric for a normal Japanese girl, but believes in what is right and gets along nicely with her friends.