Image: Sucker Punch Productions / PlayStationNo screenshot of Seaside Duel yet. This one shows Kamiagata (Sucker Punch Productions / PlayStation).
Seaside Duel is a dye for Ronin Attire. It costs 10 flowers at the Kamiagata merchants. Like every dye it only changes colours.
This one sits in the stock of the Kamiagata merchants, so it waits until you reach the frozen north.
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.
Image: Sucker Punch Productions / PlayStationCape Izumi Pillar of Honor
The Cape Izumi Pillar of Honor is a memorial shrine at Cape Izumi in Jogaku, Kamiagata. Visit it to collect the Hidden Forest sword kit, a cosmetic look for Jin's katana and tanto.