Well, that's one farfetched theory she made. Yet, every events and changes they've encountered were out of any rational explanation and impossibility, so he might give it a chance for now.

"Magic, eh? So you're trying to say that this app is somehow protecting us from the strange changes happening around the city like an amulet or a magic spell?"

He didn't want to believe this, but what choice does he have now? He has a real-life dragon living in his capsule ball and his friend able to create sparkles whenever she's happy. There is no way to ignore them.