[Nintendo DS] [2004-2014] Game where you explore a dungeon and help rebuild a town

Platform(s): Nintendo DS, I recall playing it in the DS Lite

Genre: It was a dungeon crawler with a cenital viewpoint using both screens in the DS to show the whole dungeon

Estimated year of release: 2004 - 2014, I don't remember exactly when but those where the years of the Nintendo DS so I assume is around there.

Graphics/art style: I think it had some 3D cartoony graphics kind of similar to the old toon link games. I remember it being fairly colorful and the dungeons where probably grid-based or at least it had that feel to them, with some traps being only one square in the ground.

Notable characters: Here I don't remember much, maybe the protagonist had a companion at the start when they arrive and there is only the to of them.
You rescued the villagers after each dungeon section so they where the characters you interacted with.

I distinctly remember the first villager you rescue being the mayor of the town, who was very good at building and built each villager a house or shop after each rescue.

Notable gameplay mechanics: Dungeon crawling probably with some light combat and puzzles mixed with town building with a structure similar to drawn to life.

Other details: I don't remember nothing particular apart from playing it as a kid, so good luck and thank you for the help :)