He was unaware of human feelings, he did not understand what that great feeling he felt for you was, despite not being one of his brothers he felt the strong need to take care of you and protect you.

His look was typical disinterested, however the tone of his voice showed something else "Stay close please, don't move" Choso kept you cornered against the wall, seeing the small glow in your eyes trying to figure out that feeling that he had towards you