- Best demon build in Slayer 2 combines Blood Manipulation, Nightfall Sickles, and Soryu
- Blood Manipulation hits enemies repeatedly, making flat additional damage gear extremely valuable
- Weapon path: Regular Sickles → Blood Sickles → Damascus → Nightfall (Tier 3 endgame)
- Koando clan offers the best mix of damage, healing, and full sun immunity
- Use the C → dash → V → dash → B → dash → N rotation to permanently control bosses
Best Demon Build Overview
The best demon build in Slayer 2 is a max-damage PvE setup built around Blood Manipulation, sickle weapons, and the Soryu fighting style. Blood Manipulation is one of the strongest evil arts for farming bosses and pushing dungeons because most of its abilities hit enemies multiple times per cast. Combined with sickles that stay equipped while using the art, every flat damage bonus on your weapon and gear also boosts your blood attacks.
Video Highlights:
- Full walkthrough of the max-damage demon setup
- Exact boss and chest drop locations for every weapon tier
- Complete Soryu trial objectives explained step by step
- Live boss rotation demonstrating the dash-after-every-skill pattern
The build works because of synergy: repeated hits scale with flat additional damage, sickles apply their bonuses to evil art attacks, and Soryu's Bone Breaker gives you a defensive counter when a boss survives your burst. Progression is smooth too — you can start farming with basic Regular Sickles and upgrade piece by piece.
Sickles remain equipped while casting Blood Manipulation, so the +5.75 additional damage and 1.15x factor on Nightfall Sickles directly amplify your blood skills, not just weapon moves.
How to Become a Demon and Get Blood Manipulation
Before using this build, you must become a demon and acquire the right evil art. Blood Manipulation is the target — roll or purchase it in Muzan's domain.
Lower Your Reputation
Reduce your reputation and complete Muzan's quest line to trigger the demon transformation.
Return to Muzan's Domain
Use your bell after becoming a demon to travel back to Muzan's domain.
Roll for Blood Manipulation
Roll or purchase evil arts until you obtain Blood Manipulation's item.
Complete the Training Quest Line
Use the item and finish the training quests to fully unlock the art.
Blood Manipulation cannot be used properly without sickles. Do not invest in the art until you have at least Regular Sickles, or your damage output will collapse.
Weapon Progression: Regular to Nightfall Sickles
Sickle progression is the backbone of this build. Each tier boosts damage, block points, and multipliers that feed directly into your blood attacks.
| Sickle | Source | Drop/Craft | Key Stats |
|---|---|---|---|
| Regular Sickles | Huzo (Ice Valley cave, behind waterfall) | 15% drop | +1 dmg, 1.02x dmg factor, extra block points |
| Blood Sickles | Gutai (right of Windy Peak, below the shrine) | 7% drop | +2 dmg, 1.04x dmg factor, +2.25 block points |
| Damascus Sickles | Crafted at Aigahara | Craft | +4 dmg, 1.08x dmg factor, +5.1 block, 1.9x block regain |
| Nightfall Sickles | Crafted after activating 10 Nightfall levers | Craft | +5.75 dmg, 1.15x factor, +7.95 block, 2.31x block regain, +5 max stamina |
Two farming notes matter here. While farming Huzo, also pick up Sither Vortex to unlock your second sickle skill. While farming Gutai, get Circular Slashes — it is required to unlock the final Blood Manipulation ability.
Nightfall Sickles and Mask can be upgraded to Tier 2 and Tier 3 using Nightfall Forge Ingots and Nightfall Reinforced Plating. These drop from AIA chests (5%) and world event chests (2%). Save every one you find — never sell or waste them.
Do not dump refinement materials into Regular or Blood Sickles if you are close to replacing them. Save your best materials for Damascus and Nightfall Sickles, and use a refinement guard to prevent a bad roll from downgrading your weapon.
Soryu Fighting Style: Trial Walkthrough
Soryu is a demon-exclusive fighting style requiring level 62 and unlocked fishing. Its counter, Bone Breaker, is what makes this build safe against tough bosses. Start from the bare area, travel northeast past Shobu to the small bridge and house, and talk to Kazuma to begin the trial.
| Objective | Requirement | Tips |
|---|---|---|
| Catch 20 Fish | Common rarity only | Uncommon/rare catches do not count |
| Retrieve Soryu Scroll | Flooded cave beneath Kazuma | Swim near the waterfall, check the wheel at the back |
| Deal 8,000 Basic Damage | Fists equipped, any enemy | Pick an enemy you defeat consistently |
| Defeat Sor Trainee Goki | Cave hidden by the waterfall | Bait his counters, punish after his move ends |
Goki can counter your attacks. Do not mindlessly swing while he waits — bait his response, block or dodge, then punish him during recovery.
Best Clan, Gear, and Titles
Clan Choice
Koando is the recommended clan for this demon build: 175 max health, 23% additional damage factor, 130 max stamina, damage reduction, and complete sun immunity. Its Regan Adrenal passive boosts health regen by 14% for 7 seconds during combat, and Combat Intuition converts damage taken into bonus damage.
| Clan | Damage Factor | Standout Perk | Best For |
|---|---|---|---|
| Koando | 23% | Sun immunity, healing, defense | All-around best pick |
| Rangoku | 26% (+18% in Heartblaze) | Highest burst damage | Pure damage focus |
| Uzui | 21% | Marks enemies for +25% damage taken | Aggressive mark play |
Recommended Damage Gear
| Piece | Source | Stats |
|---|---|---|
| Stonehweri | Gure (3% drop) | +2 dmg, 1.02x factor, 100 HP, 80 stamina |
| Bamboo Muzzle | Nezura (3% drop) | +2 dmg, 1.01x factor, 105 HP, 80 stamina |
| Demonic Lantern | World event chests (3%) | +2 dmg, 1.01x factor, illumination at night |
| Nightfall Mask | Crafted | +2 dmg, 1.01x factor, 90 HP, 58 stamina |
| Flex Slot | Aigahara chests (5%) | Demonic Horns 2 / Silver Fang Mask / Red Oni Mask — any +2 dmg item |
Titles
| Title | Unlock | Effect |
|---|---|---|
| Annihilator | 10M total damage | +2 additional damage |
| Reaper | 15,000 kills | 1.02x damage factor |
| Blood Manipulation Perfected | Max art mastery | 1.02x evil art damage factor |
| Hard Hitter → Devastator | 50K → 2.5M damage | +0.75 → +1.5 dmg while progressing |
Without a sun-immune clan, wear Flame Amigasa during the day (3% from Aigahara chests): sun immunity plus a 1.06x damage factor. Replace a classic straw hat as soon as you get one.
For deep dungeon runs, swap one or two damage pieces for Black Dragon Armor (damage reduction, health regain) or First Light gear (140+ HP, 1.16x health regain). Keep enough damage to clear floors quickly, but add survivability when one mistake can end the run.
Boss Rotation and Endgame Checklist
The rotation is what turns this build from strong into oppressive. Dash toward the boss after every single skill to maintain pressure and keep the enemy inside your multi-hit attacks.
Open With C
Cast your C skill for heavy sustained damage, then immediately dash back into range as it pushes the boss away.
Follow With V
Use V, dash forward again, then fire your B ultimate for a large burst.
Reposition With N
Use your N skill to push the boss into a wall or corner, limiting knockback and keeping it inside your long blood skills.
Loop C and V
C and V come off cooldown as you finish repositioning — repeat the cycle without gaps.
Counter With Soryu
If the boss survives, switch to Soryu and land Bone Breaker as a counter, then swap back to sickles and continue.
Blood Manipulation plus sickles gives you eight skills total, letting you chain attacks without giving the boss room to recover. Prioritize additional damage, max health, health and stamina regen in your skill tree, and unlock all art, weapon, and movement skills before minor upgrades.
Endgame Demon Build Milestones:
- Become a demon and unlock Blood Manipulation
- Obtain Regular Sickles and Sither Vortex from Huzo
- Farm Blood Sickles and Circular Slashes from Gutai
- Reach level 62 and complete the Soryu trial
- Craft Nightfall Sickles and Nightfall Mask, then push toward Tier 3
- Equip a full flat-additional-damage gear set and the Annihilator / Reaper / Perfected titles
The completed endgame build: Blood Manipulation + Nightfall Sickles (Tier 3) + Soryu + Koando clan + flat damage duelist gear + Annihilator, Reaper, and Blood Manipulation Perfected titles.
FAQ
Q: What is the best evil art for a demon build in Slayer 2?
Blood Manipulation is the top pick for PvE. Most of its abilities hit enemies multiple times, so bosses that stay inside the full attack lose huge amounts of health. It also gives you enough skills to keep attacking while weapon abilities are on cooldown.
Q: Why do sickles matter so much for Blood Manipulation?
Sickles stay equipped while you use the evil art, so their additional damage and damage factor directly boost your blood attacks. Nightfall Sickles add +5.75 damage and a 1.15x factor that applies to your entire rotation, not just weapon skills.
Q: Which clan should demons use?
Koando is the best all-around choice thanks to its 23% damage factor, sun immunity, and healing passives. Rangoku and Uzui are stronger for pure damage, but Koando combines offense, defense, and survivability in one package.
Q: Can I use this build before getting Nightfall Sickles?
Yes. Start with Regular Sickles, upgrade through Blood and Damascus Sickles, and use any gear with additional damage. Getting Blood Manipulation, Regular Sickles, and Soryu early improves your farming far more than hunting one perfect accessory.