Charm of Inari
The Charm of Inari is acquired from Arrow Peak Shrine which is located in the Izuahara Region. This Charm increases the amount of supplies, hides, bamboo, and yew wood you get from collecting, and is perfect for all armor during the first half of the game.
Charm of Hidden Blades
The Charm of Hidden Blade is acquired by successfully lighting the Ariake Lighthouse which is located in the Izuhara Region. This Charm allows you to hold an additional two Kunai.
Charm of Unseen Respite
The Charm of Unseen Respite is acquired by successfully liberating Aoi Village which is located in the Izuhara Region. This Charm causes your Smoke Bombs to restore 25% of your health.
Charm of Uneven Standing
The Charm of Uneven Standing is acquired by completing the The Burden of Theft Tale which is located in the Toyotama Region. This Charm causes your Sticky Bombs to down its target, leaving them vulnerable for longer.