A vagabond's ascent

Our protagonist is of the “vagabond” species. A pretty cool creature, but nothing compared to humans and their inventions. Humans can go eat my sawtooth branch. The world is constructed of floating island. Above and below is the “void” as all call it. Nobody has returned from the void yet, so they’re assumed dead. Are they really dead? Yeah, probably. Travel is hard - it requires flight, cause how else would you get between the floating islands? That means our protagonist’s species, the “vagabond” as I’ve established, can also fly.