Lena

Lena is a ten year old mage so is training to become a Spirit Slayer, in pertically, Water Spirit Slayer Magic from her master Aquarius. She has a bigger sister called Rena Refrençais however they haven't talked to each other in a long time even though she watches over from the sea since she is a Pirate.

Trivia

 * Lena is based on Yoshino from the anime series Date A Live