Che'nya likes playing tricks on you...You're the only student at the Royal Sword Academy who gives him any sort of entertainment...Granted you may not be doing it intentionally but he becomes amused whenever you're around nonetheless...

Even if he isn't scaring you or creeping you out, he likes to watch you...You make his heart flutter...In amusement, and totally not in anything else...He totally didn't find himself falling in love with you from afar...That would be completely ridiculous...