This is one of my personal favorite DS games.
Here's the current RTA WR:
https://www.speedrun.com/dqhrs/run/zq0qe59y
An old TAS WIP someone made years ago:
Link to video
A few notes from the author:
The route used in any% runs:
https://pastebin.com/qhHVW12B
And a recent skip found months ago:
https://www.speedrun.com/dqhrs/thread/bwyff