As a teenager, Josias is stubborn, short-tempered, strong-willed, and impulsive. Despite claiming not to care about what other people think about him, he attempts to maintain a detached and "cool" image. He generally keeps his face set in a near-permanent scowl, with his eyebrows drawn together. His outspoken, hot-headed demeanor is a trait Josias himself has acknowledged, and if somebody picks a fight with him, he cannot help fighting back. He coldly refers to his teachers as "instructors". He is genuinely compassionate and empathetic towards others, promising to bring a Lonely Kids flowers] and a toy plane, or soothing others when they become upset.

https://youtu.be/GkFnlq7Cbro?t=39