Ichi runs an inn in Otsuna in Toyotama and is Yuna's childhood friend from the Mamushi slave farm. Mongols under the warlord Altan have taken over her inn. She is your contact through Yuna's Tales, and she has not forgiven Yuna.
When Jin and Yuna clear the Mongols out of her inn, Ichi is furious, sure Altan will punish her. She still tells Jin that Altan hides even from his own men. He also works with Japanese slavers, including the men who once owned her.
Yuna and Taka kept running when Ichi fell and screamed during their escape. Ichi calls Yuna a thief with worthless promises. After Altan raids the inn she passes on his challenge to meet at a camp near the Kushi border.
She arrives just after Altan dies, warns that people now fear the Ghost and admits they did what they had to. She says a cool goodbye to Yuna.
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.
Altan
Altan is the Mongol warlord who terrorises Otsuna and the main enemy of Yuna's Tales. He steals food and medicine and works with Japanese slavers. He stays hidden until Jin and Yuna strike at his allies.