Wakana is Shotaro's 4-year-old niece. She is a happy genki sort of girl who loves all things pink, princess and cute. She loves her parents and uncles dearly but tends to get herself into a lot of trouble when it comes to keeping a secret.  She doesn't like Midori and considers her a "Wicked Witch" from her storybooks and would much rather have a princess for an aunt.  

She is very close to her Uncle Shotaro (Who she calls Uncle Sho) and they have special tea parties every other weekend.