I can just imagine Derek telling her about him outside and she looks right at him and he just BOLTS away because OH MY GOD SHE THINKS I'M A HUGE WEIRDO NOW spoilers-- you are kind of a weirdo, Xiaolang

and LMAO THAT'S GONNA TRIGGER A REGAIN WHEN HE TELLS HIM THAT, and Xiaolang is just going to shake his head and be like 'yeah.......this seems like this was always a THING.........'

But JOIN THE ANTI-MAGIC CLUB, with how deeply entrenched in the sciences his family is, Xiaolang is going to be in pretty hard denial of it too (even after seeing Sakura's staff and cards), so he and Derek can complain a lot about people thinking there's supernatural connections to perfectly rational things and then eating their words when they make weird stuff happen themselves