This page offers a guide on how to comlete Request 40: The Charm Lost in the Swamp in Pokémon Legends: ARCEUS (PLA).
This request can be picked up from Yojiro, who’s found at Bogbound Camp (you’ll need to complete Request 31: Setting up Bogbound Camp first). He’ll ask you to help find his charm that he lost in the bog.
Where to Find Yojiro’s Charm
The Charm won’t be marked on the map and can only be found by keeping an eye out for sparkles. Below, you’ll find the exact location of the charm in the bog - it’s south west of Bogbound camp, next to the Alpha , which you’ll want to walk clear of to avoid it spotting you.