TROPES, bandwagoning forever....
Cannot Spit It Out: LITERALLY. Fate is a bitch.
Clark Kenting: Hey, it's almost like that Princess Tutu has exactly the same facial features, hair color, and eye color as Ahiru! IMAGINE THAT.
Dojikko: .....yeah no I don't even feel the need to elaborate on this.
Genki Girl: ALSO OBVIOUS.
Gotta Catch Them All: To protect the world from devastation!! To unite all heart shards within our nation!! PRINCESS TUTU'S BLASTING OFF AGAINNNNNNN
Green Thumb: MAGICALLY CONFUSING BALLET PLANT POWERS GO.
Heroic Self Deprecation: BUT SHE'S REALLY JUST A DUUUUUCK, etc etc.
Iconic Item: dat pendant
Idiot Hair: It matches everything else about her!!
Inner Monologue: Happens almost as much as her verbal flailing! SHOCKER.
I Want My Beloved To Be Happy: YEAH SURE MYTHO I'LL DIE TO PROTECT A SMALL FRACTION OF YOUR HEART, WHY DO YOU ASK.
Love At First Sight: aww yeah, inter-species romance.
Magical Girl: ...yeah this should be obvious too.
Motor Mouth: S-S-S-S-S-S-SENIOR M-M-M-M-M-M-M-MYTHO!!!!! (an accurate interpretation.)
Naive Newcomer: Guess who's only been human for less than a few months?
Pinocchio Syndrome: Instant humanity in a necklace, anyone? JUST ADD WATER.
Plucky Girl: SO WHAT IF MY ENTIRE LIFE IS A LIE, I HAVE HOPE!!
Raqe Against The Author: GET OUT, DROSSELMEYER.
Rapunzel Hair: dat braid.
Ridiculously Cute Critter: AWW, DUCKY.
Rummage Sale Reject: WHY WOULD YOU EVER, AHIRU.
Star Crossed Lovers: Being fated to turn into a speck of light and disappear when you tell your crush how you feel kind of sucks...