Hello and sorry if this has been asked before. For the past 2 days I've been on this quest with no luck at all. I scoured the web, google translated various jappanese websites, but I still cannot find a walkthrough. Any help is greatly appreciated.

Thank you in advance!

I believe wil already has double move or swift at that point, slap it on and head to the exclamation mark before the dude, there's a couple of secret passages that make the trip shorter iirc but make sure to save before you open em since some of them are actually longer than the normal path.

I'd give more specific instructions but it's only possible to do that map once per playthrough and I don't have any saves nearby...

Edit: once you actually reach the exclamation point, you still have to wait for the alchemist to run to it. Also, make sure not to stay in the same room as he is. He'll run for you instead and make you fail the mission ._.;