The First Descendant: Yujin Build & Ultimate – Season 3 E2

Here you will find the Top 3 Weapons for Yujin in The First Descendant that I love to run.

Don’t forget to have the needed Reactor Optimization Condition with the correct weapon types, otherwise, your skills will deal much less damage!

Top 3 Weapons for Yujin

Top 3 Weapons for Yujin

Weapon	Category	Key Features	Why It’s Great for Yujin
Malevolent	Hand Cannon	Strong AoE damage	One of the most powerful AoE weapons.
Albion Cavalry Gun	Machine Gun	Strong AoE damage with multi-hit. Stuns enemies.	Stuns nearby enemies. Fast Fire Rate. Overall High DPS Weapon. Can be used for both AoE and Single-Target.
Restored Relic	Launcher	Guided Rounds Cluster Bombs	This is a powerful rocket launcher that fires guided rounds that explode into clusters to hit even more enemies! You won’t even really have to aim because the weapon has homing missiles.

Other Useful Weapons

Other Useful Weapon Options for Yujin

Weapon	Category	Key Features	Why It’s Great for Yujin
Voltia	Beam Rifle	Instantly destroys Anti-Void Shields and Arch Barriers. Electrocutes nearby enemies.	Best weapon to instantly destroy Anti-Void Shields and Arche Barriers, nothing even comes close to it. A must-have in your group if you are doing Void Vessel Operation runs!
Thunder Cage	Submachine Gun	Everyone has this weapon from the main story (easily accessible) “Newbies Best Friend” Electric Shockwaves	While this isn’t the best weapon out there, it is easily accessible. Deals great AoE damage.

Best Reactor for Yujinin The First Descendant

Selecting the best reactor for Yujin in The First Descendant can significantly enhance his abilities, allowing you to maximize his effectiveness in various scenarios. Not only does the reactor determine your skill damage, but it also gives additional secondary benefits through modifiers.

How to find the Location of Reactors

Reactor drop locations change every day. Not many players know this and get confused. Now, there is a reactor search function in-game. Go to the map and press on Difficulty Level Rewards. In here, you can see where all the reactors currently drop.

Note: It is possible that not all reactor types are currently dropping. You have to come back and recheck every day.

If your specified reactor drops in an area, you go there and farm any missions and monsters (Preferably missions with lots of monster spawns). There will be plenty of reactors dropping from monsters all over the place, any monster works. It will take a while to get a good reactor!

Best External Components for the Yujin Build

Here is the best external component set that you want to run with Yujin:

• Yujin Mobbing Setup: 4x Enlightened Mage Set
• Yujin Healer Setup Group: 4x Circulation Set
• Yujin Healer Setup Solo: 2x Enlightened Mage Set, 2x Shell Crusher Set

Important substats that you want for the components, these are locked per component types:

• Auxiliary Power: MP Recovery Out of Combat & Max HP
• Sensor: Max MP & MP Recovery in Combat
• Memory: MP Recovery Modifier & DEF
• Processor: Any stats are fine.

External Component Cores: Always go with Max HP & DEF.

Inversion Reinforcements Setup for Yujin

You can find the Inversion Reinforcements in the inventory, located on the bottom left side. This changes with every new season and needs to be leveled up again. You level up Inversion Reinforcements by doing any activity. However, the fastest way to advance it is by completing Disrupt Invasion (max 4 daily) in the dungeon terminal with the red dungeons.

At max level, you have unlocked everything. While the last perk is always active in each row, you can only slot three additional perks at the bottom. Here is what you want to prioritize:

• Hunt: Pick Arche Circulation Tactic.
• Attribute: None.
• Recovery: Selective Neurostimulation.
• Survival: Deploy Hardened Shell.
• Season: None.

All Yujin Transcendent Modules Explained

Yujin has the following transcendent modules:

• First Aid Kit
• Proliferating Allergy
• Duty and Sacrifice
• Efficient Treatment
• Battlefield Medic
• Combat Protocol

Yujin Trigger Modules

Trigger Modules are a new type of Modules that can be unlocked. Learn how to unlock Trigger Modules in The First Descendant.

For Yujin, we want to be using the Power Beyond Trigger Module for his Mobbing Setup and the Particle Conversion Emitter for his Healer Setup.

Yjuin Basics in The First Descendant

If it is your first time playing Yujin in The First Descendant, here are some useful things you should know.

1. How to unlock Yujin
2. Skills Explanation – Master Yujin’s Abilities
3. Module Basics Explained!
4. Best Grapple Hook for Yujin

How to Get Yujin in The First Descendant

Let’s take a quick look at how to unlock Yujin in the First Descendant. To unlock Yujin, you have to purchase him from the store or research him. You need the following items to research Yujin:

• 1x Yujin Enhanced Cells
  • 292x Flectorite
  • 455x Recerse Charging Coil
  • 22x Divided Plasma Battery
  • 1x Yujin Enhanced Cells Blueprint
• 1x Yujin Stabilizer
  • 239x Compound Coating Material
  • 554x Carbon Crystal
  • 40x Pure Energy Residue
  • 1x Yujin Stabilizer Blueprint
• 1x Yujin Spiral Catalyst
  • 386x Hardener
  • 408x Ceramic Composite
  • 27x Anode Ion Particle
  • 1x Yujin Spiral catalyst Blueprint
• 1x Yujin Code
  • Location 1: Echo Swamp Hard – Abyssal Void Fusion Reactor – Echo Swamp Muskeg Swamp
  • Location 2: Fortress Hard – Abyssal Void Fusion Reactor – Fortress Fallen Ark
  • Location 3: Sterile Land hard – Abyssal Void Fusion Reactor – Sterile Land Restricted Zone
  • Location 4: White-night Gulch Hard – Abyssal Void Fusion Reactor – White-night Gulch Observatory
• 400k Credits

When you visit Magisters Anais at the Research Institute, you can hover over each item. Then click on Acquisition Info, and it will tell you where this specific item drops. You can view an in-depth guide here on How to unlock Yujin in The First Descendant.

The First Descendant Yujin Skills Explained

This section will explain the skills available to our Yujin Build in the First Descendant, how each skill works and the best ways to use them.

Icon	Skill Name	Description
	Solidarity Healing	Summons a Recovery Drone that attaches to allies to heal them. Recovers target and increases their ATK through an Accelerant effect upon dismissal.
	Restructure Serum	Fires a Restructure Serum forward, decreasing DEF and inflicting Allergy. When attacking enemies with Allergy, heals nearby allies and grants additional healing to allies who kill the enemy.
	Stimulant Spray	Grants Stimulation to allies. While Stimulation is active, incoming DMG is reduced, and recovery is received when Stimulation ends.
	Hyperreactive Healing Ground	Heals self and allies, granting Purification and Immunity to remove and prevent debuffs. Additional recovery is based on the number of allies and enemies within range. Yujin is granted the Hyper Activity effect, increasing his ATK and skill power.
	Stop Overreacting (passive)	Significantly reduces the time to rescue allies. Targets rescued by Yujin gain an increase to Max HP for a certain period of time.

Solidarity Healing

Summons a Recovery Drone that attaches to allies to heal them.
Recovers target and increases their ATK through an Accelerant effect upon dismissal.

Restructure Serum

Fires a Restructure Serum forward, decreasing DEF and inflicting Allergy.
When attacking enemies with Allergy, heals nearby allies and grants additional healing to allies who kill the enemy.

Stimulant Spray

Grants Stimulation to allies.
While Stimulation is active, incoming DMG is reduced, and recovery is received when Stimulation ends.

Hyperreactive Healing

Heals self and allies, granting Purification and Immunity to remove and prevent debuffs.
Additional recovery is based on the number of allies and enemies within range. Yujin is granted the Hyper Activity effect, increasing his ATK and skill power.

Stop Overreacting (Passive)

Significantly reduces the time to rescue allies.
Targets rescued by Yujin gain an increase to Max HP for a certain period of time.

How Modules Work in The First Descendant

Modules are the bread and butter of all The First Descendant Builds. There are a few important things to remember about modules. This is for both Descendant and Weapon Modules.

While most builds require you to increase Module Capacity with an Energy Activator (you get two for free), they won’t require you to reduce the Module cost with Crystallization Catalyst. However, if you want to truly min-max a build, you will need plenty of these Catalysts.

1. How to increase your Module Capacity
2. Module Levels and Cost
   1. Kuiper Shards & best way to farm!
3. Reduce the cost of Modules
4. How to farm Modules

How to Increase Module Capacity

You get a base of 45 Modules for every Descendant character. And you can increase this up to 85 currently. First off, always slot a Sub Attack Module (Slot 7). When you increase this to the max level you will get an additional 10 Module Capacity. if you use a Crystallization Catalyst on the Sub Attack Module, you even get 15 extra slots. You will see this in the setup below.

Additionally, you can use an Energy Activator to increase your Module Capacity by another 20. However, these are fairly hard to farm, only use them on your best Descendants.

Lastly, increasing your Mastery Rank will also increase Module Capacity. Rank 1 gives you 25 Module Capacity, Rank 20 gives you 50 Module Capacity. That is how we reach the 80 Module Capacity that you see on most builds.

1. Slot a Sub Attack Module (and max it out to get +10 capacity, crystallize it for +15)
2. Use an Energy Activator (2o extra capacity)
3. Increase Mastery Rank (25 base capacity, max 50)

Weapons: Basically the same, but because you don’t have Subattack Modules, the Energy Activator gives you 30 instead of just 20 extra capacity.

You can also read my in-depth guide on how to increase Module Capacity in The First Descendant if you need more information. Or my Best Energy Activator Farm Spots and our Best Crystallization Catalyst Farm Spots. I tested all of the grind spots by myself and have already farmed plenty of these items with this method.

Module Levels and Cost

Modules can be enhanced (leveled up) with Kuiper Shards in The First Descendant. Enhancing Modules increases their power. At higher levels, the power will increase way more than at lower levels. Therefore it is always recommended to max out the most important Module first.

Here is an example of a must-have Module called Increased HP for our Descendant. You will notice that we start at 22%, but at the max level, we get a whopping 218.5% increase in health!

Transcendent Modules are the exception; they decrease Capacity Cost with higher levels!

For an in-depth overview, please visit our How to Level Up Modules in The First Descendant guide.

How to Farm Kuiper Shards

Kuiper Shards are used to level up Modules. We have a guide on the Top 3 Kuiper Shard Farming Locations in the First Descendant. We explain how to most efficiently farm Kuiper Shards (300-500k/hour) and show the amount you need to level up mods. As a summary, to max out a Module you need:

• Normal Modules: 103’100 Kuiper Shards
• Rare Modules: 206’200 Kuiper Shards
• Ultimate Modules: 309’300 Kuiper Shards
• Transcendent Modules: 515’500 Kuiper Shards

Always max out the most important Modules first, we will showcase the order below.

How to Reduce the Cost of Modules

To reduce the cost of Modules you need Crystallization Catalysts in The First Descendant. These require a lot of time investment. If you want to completely min-max you need to get plenty of them as technically, every slot can have a specific socket type to half the cost.

Modules have Socket Types. Our Increased HP Module has the Cerulean Socket Type.

• Module: Increased HP
• Socket Type: Cerulean

This is important because if we place our Increased HP Module in the fitting Socket Type, it will half the cost of the Module!

How to farm Modules in The First Descendant

Most The First Descendant Modules can be acquired fairly easily, but the higher-quality ones (Ultimate, Transcendent) are more tedious to obtain. Here is the easiest process to farm Modules quickly.

Open Map > Swap to Access Info > Select Modules

Here, you can find all Modules and their drop locations. If a module drops from several locations, it is recommended to select drop locations with higher drop chances.

There isn’t really much more to this. Simply check the location and go farm. Normal and Rare quality Modules have 30-50% drop chances in most cases. Ultimate ones range around the 5% mark and Transcendent ones can be a tough cookie with around 2% drop chance.

Smooth Grapple Hook for your Yujin Build

Using the standard Grapple Hook in The First Descendant can be a pain, and it feels kinda frustrating at times. Don’t worry, there is a way better alternative that will make it a joy to use the grappling hook!

It is called the Mid-Air Maneuvering Sub Module. I use this on all my The First Descendant Builds because it improves grappling by so much.

With this Module, you can attach your Grapple Hook to anything, even air! That means you can simply aim towards the sky and Hook up your grapple hook there for guaranteed fast movement!

Here is a guide on how to get the Mid-Air Maneuvering Sub Module in The First Descendant. It won’t take a lot of effort, but it will improve your build and overall gameplay in The First Descendant.

Yujin’s Story in The First Descendant

The First Descendant Yujin, a doctor at Albion’s only civilian hospital, found himself serving as a medic on the battlefield, where life always hangs in the balance, all because of his mother. After declaring her own intent to serve as a medic, she also submitted an application to HQ on his behalf.

Yujin wanted to scream in frustration over his enlistment, which was decided upon without his consent. Given his nature as being particularly lazy and quick-tempered, he was hardly the type to embrace military life earnestly. His mother always disapproved of this about her son, which often led to countless arguments. It would get to the point where even Medical Corps Captain Gley would throw her hands up in resignation while trying to mediate.

“Then you treat ’em, mom. Nothing I do seems to satisfy you anyway. I don’t see why I should bother saving those who have no hope. I’m not sure why I have to make that much of an effort!”

As soon as Yujin finished speaking, he was met with a hard slap. “Because you’re a doctor! It’s your job to save people until the very end!” Just as he was about to respond, his mother hurried away upon hearing news of Vespers force casualties flooding in. After the argument and the slap, Yujin was initially silent but soon felt overwhelmed with regret when his anger faded. He decided he would apologize when his mother returned. However, he learned that his mother, as well as the medical unit members, had become casualties as well and rushed out to the battlefield.

Related Guides for The First Descendant

You can also check out our Ultimate Weapons Database for The First Descendant or the Builds Database for The First Descendant.