Quest 3: The Diary of Lady Rokkaku and Katsuhime recruitment
This next part is extremely important if you want to romance Katsuhime in Assassin’s Creed Shadows. The goal is to reach the meeting point just outside Omizo Tenshu. There, you’ll learn that Katsuhime already rushed inside the castle, which triggers a cutscene.
At this point, you must reach Katsuhime’s location and then defeat a samurai named Isono Kazumasa. Failure to do this task quickly leads to Katsuhime’s death.
After dealing with Kazumasa–and assuming Katsuhime is still alive–you need to carry her to safe location outside the castle. So, go ahead and assassinate the remaining guards so they cause you any trouble. Once you’ve carried Katsuhime to the marked area, you’ll complete this objective.
Katsuhime recruitment reply: “Yes, join us.”