Arway's place of business, an abandoned warehouse on a branch offshoot of Sekaoka, the city where most of the story takes place. It is hopefully a little more apparent that the entire plot takes place on really big trees. Things to expect: Hijinks on big trees. Tree parkour.
Each of the eight trees is large enough to hold about 2-3 cities on its branches (not including settlements built inside the wood), so there's some big ol' branches in the BG to establish that this tree is superhuge.
