The Sarugami Armor is the reward for beating Black Hand Riku in his Mythic Tale on Iki Island. It turns off normal parries and rewards perfect timing instead, turning perfect parries into combo counters and perfect dodges into attacks.
Play the Iki Island expansion and complete The Legend of Black Hand Riku. Riku wears the tier III version when you duel him.
Only wear it once your timing is solid, because a missed perfect parry leaves you open. Players rate it highly for duels. Dyes include Wind Kami's Breath from Iki merchants, Crimson Victory, Monkey Eye and Snowy Macaque.
Sarugami Helmet
Sarugami Helmet is a helmet you receive while playing "The Legend of Black Hand Riku", from Mythic Tale. It is a story reward, so the tale is the only way to get it.
A Scrawled Message
A Scrawled Message is a written record from the Records of Iki set, left by locals during the Mongol invasion. You find it at a camp south of Lake Nagata on Iki Island, and it counts toward the Avid Reader trophy.
Attached to an Old Crate
Attached to an Old Crate is a written record from the Records of Iki set, left by locals during the Mongol invasion. You find it at a shed northwest of Lone Spirit Fall on Iki Island, and it counts toward the Avid Reader trophy.
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.