Remember when I talked about Kiyoshi studying colorful Treasures and their properties? Well, that would obviously require collecting samples fresh from the trees. Some trees (Orange, Yellow, and Lavender) provide Treasures within reach, but others... well, Kiyoshi would have a special method for harvesting from them.

  What he'd do is analyze the targeted tree's surroundings and then formulate a plan of movement... so basically parkour. He'll balance himself on the tree's branches if they're strong enough to support his body weight, but if they aren't, he'll mainly jump up for a quick pick, using the surroundings to get as much height as possible. The number of jumps will depend on how many samples he needs for a certain experiment and how many he can collect in a single jump. All the collected Treasures would go into a specially designed backpack with internal padding to keep them from getting crushed.

  I'm also thinking that during his time exiled in the Black Treasure Tree grove, Kiyoshi would've slept in the trees koala-style (or on the ground), and he'd be used to sleeping like that. Because of this, he might sleep underneath one of the Treasure Trees outside the palace or on the floor of his room.