Welcome to NGB and our Xenoblade Chronicles X: Definitive Edition walkthrough for the Brotherly Love affinity mission! This guide will cover everything you need to know to easily complete this quest, including how to start the mission and the steps you will need to take to finish it.
If you need help with a specific objective, please refer to our Quick Links section to quickly find the information you need!
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How to Start the Brotherly Love Affinity Mission
In Xenoblade Chronicles X: Definitive Edition, affinity and main story missions are unique in that you can only undertake one at a time. If you begin an affinity mission, you won’t be able to start a main story mission, and vice versa. Furthermore, you can only have one affinity or story mission active at any given time.

The Brotherly Love affinity mission in Xenoblade Chronicles X: Definitive Edition can be found in NLA’s Administrative District. The recommended level for this mission is 46 and the required level is 46. To begin this mission, you must complete Chapter 11. The primary destination is Sylvalum. The required affinity with Frye and Phog is Rank 4.
Brotherly Love Overview
There have been reports of a new kind of resource in Sylvalum. Go on a joint mission with the Prospectors and Interceptors and see what’s what.
Objectives:
- Investigate the resources near Sylvalum’s Badr Stonebridge
- Investigate the resources near Sylvalum’s Anvil Rock One
- Investigate the resources near Sylvalum’s North Cinderdunes
- Investigate the resources near Sylvalum’s South Hardheart Canyon
- Talk to Walter on Division Drive in the administrative district
Brotherly Love Walkthrough

Travel to the objective just north of Badr Stonebridge in Sylvalum. Once there, you’ll need to take out the Level 47 Candelario, the Bronze, unique enemy then grab the Mysterious Substance.

Next, you must interact with the Mysterious Substance at the Anvil Sandplain, North Cinderdunes, and South Hardheart Canyon. After interacting the the substance each time, a cutscene will trigger.
After interacting with all the samples, speak with Walter in the Administrative District on Division Drive. The Brotherly Love mission will then end.
Completion Rewards
As a reward for completing the Brotherly Love affinity mission, you’ll receive the following:
- Experience x460
- Reward Money x41,000
- Innovation Inspiration
- FILE-USP1380SA
- Gatling Gun Art “Titan Recharge”
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