.:Sensei Akogare Yin:.

This character could be taken as an 'oc'. She's designed to fit the Ninjago universe from the show Lego Ninjago.
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Sensei Akogare Yin is a ninjitzu teacher with a tragic past that left her un-trusting to those she meets in her daily life. She's a teacher for 4 elemental masters: Ava David, Lux Rudy, Vex Williams and Vixen Fox.

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Design notes:
-She's designed to be Kodokuna Yang's opposite.
-'Kodokuna' means lonely, while 'Akogare' means adored.
-Her symbol is 'Himawari', which means 'sunflower' in Japanese. It symbolizes 'adoration'. Sunflower is completely opposite to Yin as one of Yin's ''attributes'' is the moon, opposite of Yang.
-She keeps a Yang Blade secretly hidden away from the world, and her students. She doesn't dare use it's dangerous power.
-The Yang Blade is the opposite of the Yin Blade. While the Yin Blade is able to open rifts and grant immortality, the Yang Blade allows to creation of new realms and bring death upon anybody.