Yuna's Tales are a 4-part Act 2 side storyline set in Otsuna, where you and Yuna draw out a Mongol warlord named Altan by taking down his slaver allies. It digs into Yuna's childhood as a slave, and finishing it earns the silver trophy The Headstrong Thief.
Part 66 of 66 in Tales of Tsushima
A Mongol warlord, Altan, is robbing Otsuna of food and medicine and butchering anyone who resists. Nobody knows where he hides, so Yuna's old friend Ichi suggests hitting his allies until he comes out. Those allies are Japanese slavers who once held Yuna and her brother Taka as children, so each tale also pulls Yuna back into her past and her strained history with Ichi.
Yuna, Taka and Ichi were child slaves together at Mamushi Farmstead. When they ran, Ichi fell behind and was caught while Yuna and Taka kept going, which is why Ichi resents her. The Black Wolf, who sold them, abused Taka as a child. Yuna kills him on his ship, and the arc ends with Jin defeating Altan in a duel.
A Debt Repaid
A Debt Repaid is an Act 2 side tale in Kushi, Toyotama, where you help a man named Gomyo take revenge on the bandits who used him. Expect a camp assault and a second wave, and a Charm of Enduring Affliction at the end.
A Final Request
A Final Request is a Toyotama side tale that starts with Straw Hat ronin raiding Lucky Genzo's Inn. You chase the raiders through three camps to find a captured man named Oda, and the reward is a Charm of Dual Destruction II.
A Thief of Innocence
A Thief of Innocence is an Act 2 tale in Umugi Cove where a mother asks you to find her missing daughter, Kuma. You question locals, trail a strange Straw Hat and raid an inn, and the reward is a Charm of Ferocity.
A Wealthy Man Has All He Needs
In this Act 2 tale at the Umugi survivor camp, you deal with a merchant gone sour. Saburo, rich and desperate, is threatening refugees over his missing family, and you investigate who really took them. It rewards a Charm of Fortunate Return.