The Traitor

This guy is Yano Aoi (Aoi Yano, in the Western way of writing).
Second in the leadership of a group, in a world completely divided between "good" and "evil". Extremely quiet and a great traitor. He takes advantage of the fact that a group without a healer is useless to be never expelled.
He's 14 years old, never goes into battle, he's extremely skilled in preparing medicines and, despite being a traitor, very serious about his work, berating anyone who neglect their treatment.

Sorry the bad english

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