76 characters in Ghost of Tsushima.
Yasumasa
Yasumasa is one of the five Straw Hat ronin who follow Kojiro in The Six Blades of Kojiro. He takes a boy hostage in Old Kanazawa Marsh to draw Jin into the Duel in the Drowning Marsh.
Yasunari Adachi
Yasunari Adachi was Masako's other son. He was hanged alongside his brother Shigesato after Komoda Beach, and Jin helps Masako find and bury them both in her tales.
Yuna
Yuna is a thief from Yarikawa and Jin's closest ally in Ghost of Tsushima. She pulls him off Komoda Beach, teaches him to fight from the shadows and coins the name Ghost. She also has her own four-part storyline, Yuna's Tales, about the slavers who stole her childhood.
Yuriko
Yuriko is the elderly servant who helped raise Jin after his mother died. She knows plants that heal, cause visions and kill. In Ghosts from the Past and her side tales she teaches Jin to make poison and hallucination darts.