Jujutsu Infinite Best Solo Boss Build Guide

If you’re looking to master boss farming in Jujutsu Infinite and defeat some of the hardest bosses in record time, you’re in the right place. This guide will walk you through the best solo boss build that can clear bosses like Sukuna in under a minute and TOI bosses in around 40-50 seconds. Whether you have access to a domain or not, this build ensures you can farm efficiently and rapidly, maximizing your damage output while keeping your fights smooth and quick.

Jujutsu Infinite Techniques for the Build

The core of this build revolves around two essential techniques: Ratio and Star Rage. These two combined offer insane damage output, making boss fights a breeze.

  • Ratio: A crucial technique that excels in boss farming, providing a massive boost to damage, especially when paired with other abilities. If you’ve seen PvE tier lists that rank Ratio low, it’s because those tier lists likely didn’t utilize the technique properly. Trust me, Ratio is a game-changer for solo boss fights.
  • Star Rage: This technique will be used with the Terra and Jupiter moves, which change inside of the domain, helping you deal astronomical damage. This is another major damage dealer for taking down bosses quickly.

While Curse Queen and Volcano are optional for your third and fourth slots, they can offer extra versatility and damage boosts when included. Volcano Gastly Fist is particularly useful because it allows you to inflict continuous damage without flinging the boss.

Jujutsu Infinite Best Stat Allocation and Skill Tree for Boss

Health Tree

In order to survive the hardest boss fights, you’ll need to max out your health to a certain degree, but without going overboard.

  • Health: Max out health, increasing it up until just before the burst RCT. Don’t go for burst RCT as it’s not necessary for this build.
  • Brain Heal: This skill provides a 22% domain meter increase and ensures you have your domain ready for the next battle. This is an important node to pick up, as it helps to fuel your domain meter efficiently.

Focus Tree

The focus tree is a key part of this build, allowing you to deal heavy damage and boost your black flash proficiency:

  • Black Flash Proficiency: Invest fully in Black Flash proficiency to increase its damage output significantly. At 130%, Black Flash becomes one of your most powerful abilities.
  • Vampiric Black Flash: This is optional but highly recommended. It allows Black Flash to restore some health during combat, which is helpful in longer fights.
  • Lock In: This is essential for sustaining your damage output during fights.
  • Total Concentration: Max this skill to enhance focus and ensure continuous damage without having to pause for building focus.

Technique Tree

Maximize your Technique Damage to increase the effectiveness of Ratio and Star Rage. You can also invest in other moves like Divergent Fist if you’re looking to further increase your damage output.

Strength Tree

For this build, Strength isn’t a priority, so you can leave this tree untouched.

Jujutsu Infinite Best Innate Abilities for Boss Farming

The right innates are crucial for maximizing your effectiveness in boss fights. Here’s what you should focus on:

  • For Ratio: Use the first three moves of Ratio to get the most out of this technique, allowing it to hit extremely hard and deal massive damage.
  • For Star Rage: Use the Terra and Jupiter moves for insane damage scaling inside your domain. If you have access to a domain, you should always pop it early to avoid letting the boss expand theirs.

Jujutsu Infinite Equipment Recommendations Boss Farming

While gear doesn’t have as much of an impact as the techniques and stats, it’s still essential to optimize your build for maximum damage. Here are some gear recommendations:

  • Sukuna Gear: This gear is optimal for the build, though you can also use the Enlightenment Beads and Perception Blocking Mask. The Mask provides 20% more damage to entities, which can be invaluable for solo boss fights.
  • Weapon: Your weapon choice isn’t crucial for this build, so you can pick one based on personal preference. The main focus is on techniques, not your weapon.
  • Cloak: The Center Cloak is useful if you have it, though Joo’s Gear is even better.

Jujutsu Infinite How to Execute Boss Farming Build

Here’s a simple rundown of how to use this build in a solo boss fight:

  1. Pre-Fight Buff: Before you enter any boss fight, make sure to pop your buffs. You can use a Rage Gourd for a 40% damage boost, though if you want to maximize your domain meter, avoid using it if you don’t have your domain ready.
  2. Phase 1 – Boss Fight Begins: Spawn the boss, and start with Gastly Fist from Ra. This will allow you to deal consistent damage without the risk of launching the boss.
  3. Dodge and Attack: Once the boss goes into its attack phase, dodge their incoming moves. Wait for them to perform a stun animation and then follow up with Jupiter and Terra to unleash a devastating combo.
  4. Use Black Flash: Make sure to land a Black Flash at the right moment, especially after dodging the boss’s attacks. This technique will deal massive damage and help you build your focus meter.
  5. Expand Domain: If you have your domain ready, expand it before the boss can trigger theirs. This ensures you’re maximizing your damage output and controlling the fight.
  6. Finishing Touches: Use your remaining techniques like Gastly Fist and Terra/Jupiter to keep up the damage. Once the boss is near death, finish them off with your strongest moves like 73 Strike for the final blow.

Even without a domain, this build can still clear bosses in record time. The key is to use Gastly Fist effectively and manage your focus meter well to ensure your damage stays consistent.


With the right techniques, stat allocation, and gear, this build allows you to solo bosses in Jujutsu Infinite with ease. Whether you’re farming Sukuna or other TOI bosses, this setup will make boss fights quicker and more efficient. If you don’t have a domain yet, don’t worry – this build still works perfectly fine without it.

Jay: A Content writer for Roonby.com Contact me on Jason@roonby.com, we can't reply to gmail for some reason.

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