Something weird i noticed on capitano's model

Why do you think he would have this glowing trigger applied to his model when it was never used in any of the cutscenes? no way genshin would add that much details to a model they'd never use to be an unplayable character (to clarify yes this is capitano's model into neuvillette, however that doesn't explain why theres a glow trigger on that specific part of capitano's model and why it activates on certain moments whenever some sort of weird rotation happens it triggers that glow on his cape, which we never seen in any of the cutscenes, this detail on his model might hint to his playability)