Akimi Village

Missable! After planting all 10 trees, you'll still have a lot of black gloomy area. Go to your Gardener and build a lot of trees and place them around to remove the black area. Before you upgrade it, build lots of Sakura Trees. Once you upgrade it, build the Sylvan Wonders instead, as they purify a larger area. You'll know you've purified the entire area if you get a cutscene with the raccoon. The Dragon Gate is unlocked about halfway through the building tree, on the bottom row. Just avoid its blueprint until the very end and you'll be fine. It's not required to build any other building (except the Grand Dragon Gate), so it's not necessary at all until the end.

Do be careful, as there is a hard limit on how many components you can build. I ended up with a lot of duplicate buildings (Shrines, Workshops, resource refining buildings), and had to destroy some before I could build more trees. Destroy a building by hitting to punch it a few times, then destroy the components by punching those too (you'll get the individual ingredients back, though you have to carry them to the appropriate shop).

If you miss this trophy, you'll have to start a new game from scratch, so be careful.