These two charms give you huge bonuses which are worth the rest of the game; one unlocks health regeneration between battles, and the other gives you double supplies / crafting items with every pickup. That's practically twice the money and twice the items to upgrade your gear. It is extremely helpful. So we have marked the locations on the map below so that you can find them easily.
10 Tips to Help You Become a Master Samurai Beginner's Guide | How To Get The Sly Cooper Easter Egg Trophy | The best ghost weapons and tactics to unlock first
How to get the Regen Health Charm
The first shrine gives you a charm that applies constant regenerating health when you're not fighting. That way, you'll always be 100% between fights, and you won't have to lose your resolve to heal.
Restorative Rock Sanctuary: The sanctuary is located on a small island in the northeast, right next to the “Isonade Coast” label on the map. One of the first missions is Fort Nakayama where you get the bow and arrow - the small island is far to the east.
To reach the island you will have to follow a very dangerous mountain path. Find a road leading to the coast on your map and look towards the island - you will see a long bridge leading to it. To get to the bridge, start with the dirt road and follow the winding mountain path. It's a long hike, and you'll have to go up, down, and around the cliffs to finally reach the shrine.
To reach this shrine you will unlock the Charme d'Okuninushi. With this equipment, you will slowly recover health points out of combat.
How to get the charm of the double supplies / crafts
The second sanctuary offers you a charm that double supplies and crafts. It is on a high hill between Archer's Rise et View on Sakimori in Azamo prefecture.
This charm is called the Inari Charm, and it's much easier to spot on the map. Departing from Archer's Rise, you'll spot this mountain-top sanctuary to the southeast. Climb to the top, you can't miss it!