Image: Sucker Punch Productions / PlayStationNo screenshot of Charm of Fortune II yet. This one shows Kamiagata (Sucker Punch Productions / PlayStation).
The Charm of Fortune II is a minor Utility charm in Ghost of Tsushima. Any effect that works on a percentage chance becomes 50% more likely to happen. The wiki lists the same value as Fortune I. You get it by finishing the tale Friends in Passing.
Complete Friends in Passing and the charm is part of its reward.
Hidden Serpent
Hidden Serpent is a dye for the Half Bow. It is a reward for completing "Friends in Passing" (Ishikawa's tales, part 8 of 9). Like every dye it only changes colours.
Image: Sucker Punch Productions / PlayStationAzure Dragon
Azure Dragon is a Sword Kit that reskins Jin's katana and tanto. You collect it from the Pillar of Honor on the east side of the Endless Forest in Kamiagata, and it is purely cosmetic.
Image: Sucker Punch Productions / PlayStationBamboo Strikes
Bamboo Strikes are button-timing challenges where Jin slices a row of bamboo poles. There are 20 in all, 16 on Tsushima and 4 on Iki, and completing them raises your maximum Resolve.
Image: Sucker Punch Productions / PlayStationBitter Hills Pillar of Honor
The Bitter Hills Pillar of Honor is a memorial shrine at Bitter Hills in Sago, Kamiagata. Visit it to collect the Shogun's Storm sword kit, a cosmetic look for Jin's katana and tanto.