“How about junior high maths?” I decided to go down by one level.

Another book appeared in front of me. When I flipped it open, I was relieved to see the geometry I was familiar with. Evidently, the people in this world had higher IQ than the world I’d come from. Judging from Silver Moon City alone, their technology was far ahead of ours.

I read the book in silence as Harry slept. For a long time, the entire cabin was enveloped in silence. It was so quiet that I almost forgot that Harry was there. This was the quietest he’d ever been since I got to know him.

“Incoming signal connection,” Ice Dragon reported. Then, Raffles appeared on the screen before me; he...