The Bad Brother main quest in Assassin’s Creed Shadows plays an integral role in the Onryo saga, as it prepares players to confront The Fool. Unlike typical quests centered around combat, this mission emphasizes the importance of intelligence and investigation. Your objective is to locate Ise Sadatame, a noble loyal to Mitsuhide, who has faced betrayal from his own brother and holds vital information regarding the family’s dark secrets.
This comprehensive guide will outline the steps necessary to find Ise Sadatame and the crucial decisions you must confront throughout the Bad Brother quest.
The Bad Brother Main Quest Walkthrough in Assassin’s Creed Shadows

Finding Ise Sadatame
To begin your quest, navigate to Byodoin Temple, located in the northern region of Ogura Pond in Yamashiro. If you’re uncertain about the location, Ogura Pond is northeast of Izumi Settsu; just head north until the temple comes into view. Although the game provides a scouting feature to help pinpoint the destination, reaching the temple is relatively straightforward. Once you arrive, you’ll encounter Ise Sadatame outside a shrine, ready to converse.
Engaging with Ise Sadatame: Your Choices Matter

Upon meeting Ise Sadatame, you’ll be invited to enter and hear about his tumultuous familial situation. He reveals how his brother, Ise Sadoki, betrayed him by poisoning him and now allies with Mitsuhide. Sadatame will inquire about your allegiance to Mitsuhide, presenting these dialogue options:
- “I do not support Mitsuhide” (available if you’re playing as Naoe)
- “I serve Lord Nobunaga” (available if you’re playing as Yasuke)
Your choice here does not impact the mission’s outcome. After establishing a mutual disdain for Mitsuhide, Sadatame recounts his failed attempts to reach out to his brother through letters, which were intercepted, leaving the contents of the replies a mystery.
Preparing for the Upcoming Mission: Missing Missive
Sadatame enlists your help to recover the lost letters and hints at an ally within Yamazaki Castle who might assist you. This ally, a samurai named Ujimasa, could provide essential insights into the castle’s layout and defenses.

At this juncture, you need to choose whether to proceed with Naoe or Yasuke for the forthcoming mission, Missing Missive. This decision does not alter the story arc, so feel free to select the character that aligns with your preferred gameplay style. Once you make your choice, you’ll complete The Bad Brother quest and receive a reward of 1,000 XP.