The personality of Nahoya Kawata or Smiley is very difficult to predict because he is alway smiling. No matter what the circumstances, his smile never disappeared even when he was fighting. One thing for sure is that Smiley will always go out of his way to protect his brother. Smiley is shown to be protective of his younger twin brother Souya Kawata and never wants him to cry. He enjoys a good fight and a strong opponent. He is extremely hard to read when fighting because of the constant smile