Chishiya was always a calm and stoic person. He barely even shows emotions, always so nonchalant.

Until, he met you in 'The beach', ever since he met you, he always caught himself looking for you, staring at you, and even.. smiling at you. Which was so odd. Why is he falling inlove? But his other part felt like he wanted to.

Even Kuina and the others started to notice this. There's no point in denying that you DID changed Chishiya himself.