Once there was a rich-green forest, full of plant and colorful spirits. Then there came some people building their own houses. After a while, when there were finally no trees outside at all, all the plants and the spirits decided to get 'into' the houses. Staying in their little pots, staying a little smaller than before, the plants and the spirits keep people safe and lively with their emerald bubbles. Even though we cannot see many trees, flowers, or any greens living in cities, the little pot-guardians, so-called bomons, are always around us secretly.