Sukuna arrived in Re:Rangers X as part of the JJK content update, and he's quickly become one of the most sought-after Mythic units in the game. His raw damage output is among the highest of any unit, making him a powerhouse for clearing waves and tackling endgame content. Getting him — and then evolving him into Curse King (Shrine) — takes real commitment, though. Here's exactly what's involved.
Quick answer: Play Calamity Mode to obtain Sukuna as a random drop (or hit the 150-run pity guarantee), then collect 200 takedowns, 16 King's Fingers, 1 King's Shrine, and 7 Demon Fang Shards to evolve him.
Obtaining Sukuna Through Calamity Mode
Sukuna can only drop from the Calamity game mode, which pits you against Mahoraga. After each successful run, there's a chance Sukuna will appear as a reward. The probability depends entirely on which difficulty you choose.
| Difficulty | Sukuna Drop Chance |
|---|---|
| Normal | 0.25% |
| Hard | 0.5% |
| Nightmare | 1% |
Those rates are low across the board, but a built-in pity system guarantees Sukuna after 150 completed runs regardless of difficulty. Because of this, farming Normal mode is generally the most efficient path. Normal runs can be cleared in under 50 seconds with a strong lineup, letting you rack up completions far faster than grinding Nightmare for the slightly better odds.
How Calamity Mode Works — Mahoraga's Adaptation Mechanic
Calamity Mode isn't a standard tower defense wave. Mahoraga adapts to your attacks over time. Every 10th hit triggers a 10% adaptation increase, and once adaptation reaches 100%, your units are wiped out, and the run ends in a loss. This means bringing fewer units is actually better — flooding the field with high-attack characters causes Mahoraga to adapt too quickly.
A proven strategy is to run just two units. One should be a high-damage dealer like Etto, and the other should be a tanky unit that can absorb Mahoraga's hits while your damage dealer works. Units like Broly or Kyito work well as tanks. Avoid fragile units in the second slot — characters like Ken get knocked out in just a couple of hits from Mahoraga.
With a well-built Etto (equipped with items like Solo Chance, Ethereal Lance, Armored Shoes, Wings of Valkyrie, and Crown of Eternity), you can consistently clear Nightmare mode in roughly 40–44 seconds. Normal mode clears are even faster.
Sukuna Evolution Requirements — Curse King (Shrine)
Once you have base Sukuna, evolving him into Curse King (Shrine) requires four distinct materials and milestones. Each one comes from a different part of the game, so expect to grind across multiple modes.
| Requirement | How to Get It |
|---|---|
| 200 Takedowns | Equip Sukuna in your lineup and defeat 200 enemies with him. You can AFK this on an early map by letting Sukuna fight enemies indefinitely — roughly 5 minutes of idle play gets you to 200. |
| 16× King's Finger | Farm Calamity Mode. During runs, Sukuna and Mahoraga bosses have a difficulty-based chance to spawn. Defeating both bosses in a single run awards one King's Finger. |
| 1× King's Shrine | Purchase from the Raid Shop for 400 Cursed Scrolls. Cursed Scrolls drop from completing raids. |
| 7× Demon Fang Shard | Farm Tokyo City – Act 3. Each completion has approximately a 25% chance to drop one shard. |
Farming 200 Takedowns Efficiently
Step 1: Remove all other units from your lineup and equip only Sukuna. This ensures every kill counts toward his personal takedown total.
Step 2: Load into an early-game map — any low-difficulty stage where enemies spawn continuously works fine. The fourth act or any "easy" map is ideal.
Step 3: Let Sukuna fight on his own for about five minutes. The enemies on these maps are weak enough that he'll mow through them without any risk, and you'll hit 200 kills without needing to actively play.
Collecting King's Fingers From Calamity Mode
King's Fingers are the most time-consuming material to farm. You need 16 of them, and they only drop from Calamity Mode when both a Sukuna boss and a Mahoraga boss spawn during the same run. The spawn chance for these bosses scales with difficulty, so higher difficulties give you more opportunities — but the spawns are still not guaranteed every run.
Since you're likely already farming Calamity Mode for the base Sukuna drop or Curse Energy, King's Finger farming happens naturally alongside those goals. Expect this to take the longest out of all four requirements.
Buying King's Shrine From the Raid Shop
You only need one King's Shrine, and it costs 400 Cursed Scrolls from the Raid Shop. Cursed Scrolls are earned by completing raids, so if you've been running raid content regularly, you may already have enough saved up. If not, focus a few sessions on raids to accumulate the currency.
Farming Demon Fang Shards in Tokyo City – Act 3
Demon Fang Shards drop from Tokyo City – Act 3 at roughly a 25% rate per completion. You need seven shards total, which means you'll average around 28 runs to collect them all — though luck can shorten or extend that significantly. This is a straightforward grind with no special mechanics; just clear the stage repeatedly.
Evolving Sukuna into Curse King (Shrine) is one of the more demanding grinds in Re:Rangers X right now, but the payoff is a unit with exceptional damage that trivializes most content. Prioritize the 200 takedowns first since they take almost no effort, then split your sessions between Calamity Mode for King's Fingers, raids for Cursed Scrolls, and Tokyo City – Act 3 for Demon Fang Shards. With consistent play, you'll have the Curse King ready to deploy within a few days of focused farming.