Mitsuru is quiet, reserved, analytical, smart, aloof, open-minded, creative, insecure, and logical. He doesn't like showing his face or having his picture taken because he used to be a child model, and he got stalked by an older woman because of it, causing him to move cities, but he prefers not to tell people about it unless he trusts them. He has blue hair and blue eyes, and he wears blue glasses to hide his face.