The Husband is Masako Tale 3 of 9, an Act 1 side tale at the Adachi Estate in Ariake. You try to get Sadao's wife Hina to talk, then track an assassin when things go wrong. It rewards the Charm of Dual Destruction I and 2 Silk.
Part 3 of 10 in Masako's Tales
Part 12 of 66 in Tales of Tsushima
Masako is getting nowhere with Hina, so Jin goes in to calm her and promises to try to keep her husband alive. That works, and Hina gives up what she knows. You step outside with Masako for a moment, then hear a scream from the house. From there it becomes a tracking job: find the trail, follow it, and deal with the Mongols holding the man you are after.
Go to the Adachi Estate. Talk to Hina, then to Masako, and take a short walk with her. Run back to Hina. Talk to Masako. Head to the search area and find the killer's trail. Follow it, save him from his captors, and check his body.
Hina is killed while you are outside. Jin realizes Masako left her exposed on purpose, hoping the conspirators would come for her. The killer is Hachi, Sadao's brother, who claims he came to free her and panicked when she screamed. Mongols have caught and wounded him on the road. He refuses to give up his brother and dies, but he carries the supply route map you need.
The Headman
The Headman is Masako Tale 2 of 9, an Act 1 side tale in Ariake where you start hunting the first name on Masako's list. You trail a bandit-linked brother to find a former Adachi headman, and it pays a Charm of Resolve I and 2 Silk.
The Traitor
The Traitor is Masako Tale 4 of 9 and the last Act 1 part of her hunt, set in Ariake. You use a supply map and a monk's help to corner Sadao at a lighthouse. It rewards the Charm of Incineration, the Warrior's Bounty Dye Kit and 2 Silk.
Image: Sucker Punch Productions / PlayStationThe Tale of Lady Masako
The Tale of Lady Masako is the Act 1 story tale where you recruit Masako Adachi after her clan is wiped out. It rewards the Samurai Clan Armor and is also Masako Tale 1 of 9, opening her side storyline.
A Mother's Peace
A Mother's Peace is an unnumbered Masako tale in Act 1 where you help Lady Masako find and bury her two sons on Komoda Beach. It opens after The Husband from a peasant at the Golden Temple and rewards the Charm of Fortunate Return and 2 Silk.