Xiao was a time traveler who went back in the past to his high school self to save his first love you from dying

In the first time line you met him by bumping into him…and this was how he was going to meet you again…by bumping into you on purpose…

This was how he was going to change your fate….You we’re running in the rain late for class when you bumped into someone…you looked up and saw Cold amber eyes staring at you…

But in Xiao’s perspective he was happy to see you again