Short answer: both Nue Malefact and Shidou are weak to Poison. Bring the Hunter's Sword with Poison Arrows and Poison Bolts, parry Shidou's sword strings, perfect-dodge anything that glows red, and let the automatic lock-on decide which boss you are hitting. The fight is lost by killing Shidou too early, not by low damage.

Weakness and what to bring

Poison, for both of them. Fextralife, Game8, Sportskeeda, DualShockers, allthings.how and OSLink all list Poison independently — this is one of the better-corroborated facts in the game right now. What none of them publish is a number: there is no resistance table anywhere, so Poison is a confirmed weakness, not a measured multiplier. Anyone quoting a percentage is guessing.

  • Sword — Hunter's Sword (Poison, Envenomed: Poison buildup +8 for 5s). Fextralife names this weapon on both the Nue Malefact and the Shidou & Nue pages. You can pick it up in Chapter 3 from the weapon rack near the Great Forest: Entrance camp, which is early enough for every encounter in this fight.
  • Ranged — Poison Arrows and Poison Bolts, stocked up. Use them on Nue only: Shidou can parry your ranged attacks.
  • Koo — Higanbana: Roots has a chance to Bind Nue. Land the Bind, then open Entanglement Overdrive to stretch the down time.
  • Kiku: Bloom Strike on Shidou knocks him down almost every time. DualShockers' writer called this the single thing that turned the fight around for him.
  • Armour — Floral Wraps, from a strongbox near the Old Sagami Colony: Approach camp, if you are heading into the Chapter 11 version.

Do not bring Black Blossom to this fight even though it is the strongest Poison sword in the game (Poison Storm, buildup +20). It drops from the final Shidou & Nue encounter, so you cannot have it before you win. See the weapons table for the disputed detail on where it is actually collected.

Next: the whole plan above assumes you already have a Poison sword. If you don't, that is the thing to fix before another attempt — every sword, its element and where it drops is on the weapons page.

Find a Poison sword

All six encounters

Nue shows up more often than any other Nushi, and the level scaling is what changes between visits — the moveset itself does not change, only the damage goes up (DualShockers).

EncounterChapter and placeBoss level
Nue aloneChapter 1 — Ogouchi Colony (flashback)Lv 16
Nue aloneChapter 3 — Great Wall Terraces (Mountain Plaza: Forefront, Great Forest Clearing, Titan Buddha)Lv 16
Shidou & NueChapter 3 — Great Wall Terraces, chapter finaleLv 20
Nue aloneChapter 6 — Fuji FrontierLv 32
Shidou & NueChapter 6 — Fuji FrontierLv 35
Shidou & Nue (final)Chapter 11 — Mount Hiei ZoneLv 48
We had this wrong until today. Our boss overview table previously showed a single row reading "Ch 1 (Lv 16) · Ch 3 (Lv 20) · Ch 6 (Lv 32)", which silently merged the solo Nue fights with the paired Shidou & Nue fights. The table above separates them. Levels are from Fextralife, OSLink, DualShockers and allthings.how; unlike Erymanth we do not have an in-game health-bar screenshot confirming them, so treat them as guide-sourced rather than read off the screen.

On the spelling: every external guide writes Nue Malefact, matching Crimson Malefact elsewhere in the game. Some older pages (including ours) wrote "Nue Malefact". We have standardised on Malefact.

Nue's attacks

Nue is a dog-bodied creature with a lotus-shaped head. Its whole kit is readable once you learn one rule: if it glows red, you cannot parry it.

AttackTellParry?Response
Giant LeapBacks away, glows red, then jumps at youNoPerfect-dodge in the instant before it lands. Rolling early gets you caught by the landing
Claw string (also written "Throwing Punches" or "Six Hit Combo")A claw is drawn out to the sideYes, every hitFive claw swipes into a body slam. There is roughly a one-second pause after the first two. The closing slam looks slow but arrives fast — press parry early in the descent rather than waiting for it to look right
Tail spinTail lifts and the body rotatesYesAbout two seconds between the two hits, which makes it the easiest parry in the fight. Careful: it sometimes chains straight into another string instead of leaving an opening
Lightning strikesA roar, usually fired while you are busy with ShidouNoStrafe laterally until the pattern resolves. Nue stands still while casting, so a confident player can dodge through it and punish
ProjectileDodge or guardReported by Fextralife and allthings.how; less well documented than the four above

Nue's most reliable opening is the moment after the claw string finishes with the slam — it pauses to catch its breath, which is when you go for the head.

Shidou's attacks

Shidou is a male Purifier and a straightforward duellist. Three attacks, plus the mechanic that defines the encounter.

AttackTellParry?Response
Sword flurry (two hits, sometimes four)Blade pulled back to his left hip, rising cut into a downward cutYes, each hitRoughly one second apart. The four-hit version is the most dangerous move in the fight — a failed parry takes most of a health bar. The two-hit version is forgiving; the hard part is reading when the first swing starts
Branch swing (vine arm)His left arm turns into a branch, then sweeps left and rightYes, both hitsAbout 1.5 seconds apart. Slow to start, fast to follow — you can almost hold the parry rhythm
Tree SlamRises into the air and glows redNoPerfect-dodge on the landing. The window is generous, and what follows is your biggest damage or healing opportunity in the fight
SiphonHe disengages when low and starts draining NueSee below — this is the decision that decides the fight

The Siphon mechanic, and the two ways to play it

When Shidou drops low he stops fighting and drains health from Nue. The important detail, reported by HardcoreGamer, is that he takes more out of Nue than he puts into himself. That single fact is why guides split into two camps, and both of them work.

Approach A — interrupt it. Run in and break the Siphon. One interrupt staggers both bosses at once, and it does so regardless of how full Nue's stagger bar is. HardcoreGamer refines this: break it halfway through rather than instantly, so Nue still loses the health Shidou pulled. Sourced from Fextralife, DualShockers, HardcoreGamer and OSLink.
Approach B — farm it. Push Shidou to about 30% health and then stop hitting him. Let him drain Nue. Repeat the cycle until Nue is also low, then finish Shidou and end the fight. Sourced from allthings.how only — one guide, but it is internally consistent with the mechanic HardcoreGamer describes.

We are deliberately not picking a winner. Approach A is backed by four guides and is safer if your parries are shaky. Approach B is backed by one guide and is faster if you can survive long cycles. Both rest on the same underlying mechanic, which is well corroborated even though the tactic built on top of it is not.

Why the fight stalls

  1. You killed Shidou too early. allthings.how names this as the most common reason players get stuck: with Shidou gone you have to grind Nue's full bar with no Siphon interrupts to stagger it.
  2. You are manually switching lock-on. Don't. The game automatically moves the reticle to whichever boss is about to attack — follow it. Expect roughly a minute per one-on-one exchange.
  3. You are standing between them. Fight from outside the pair, not in the middle.
  4. You are shooting Shidou. He parries ranged attacks. Save arrows and bolts for Nue.
  5. You are trying to parry the red glow. Both bosses have exactly one unparryable move each, and both are flagged the same way. Red means dodge.

Rewards

EncounterDrops
Nue alone — Chapter 1 (Ogouchi)No reward
Nue alone — Chapter 3Ursine Memories · Nushi Skill: Rampaging Asagao · Blade Art: Asagao
Nue alone — Chapter 6Dokuzeri: Fang II (Koo) · Finisher: Dokuzeri (Emma)
Shidou & Nue — finalNue Memories · Bloom Art: Erica: Strangle Lv.1 · Blade Art / Finisher: Blade Art: Nue Lv.1 · Black Blossom (Poison + Lightning sword, Poison Storm)

The trophy and achievement are both named Shidou & Nue.

FAQ

What is Nue Malefact's weakness?

Poison. Both Nue Malefact and Shidou are weak to Poison, and six independent guides agree on this. Bring the Hunter's Sword plus Poison Arrows and Poison Bolts. No source publishes numeric resistance percentages, so treat Poison as a confirmed weakness but not a measured multiplier.

Should you interrupt Shidou when he siphons Nue?

Guides disagree, and both approaches work. Fextralife, DualShockers, HardcoreGamer and OSLink say interrupt it immediately, because one interrupt staggers both bosses at once regardless of Nue's stagger bar. allthings.how says the opposite: stop attacking Shidou at roughly 30 percent health and let him drain Nue, because he takes more from Nue than he gains, then kill him once Nue is also low.

How many times do you fight Nue Malefact?

Up to six times. Nue appears alone in Chapter 1 at Ogouchi Colony around level 16, again in Chapter 3 at the Great Wall Terraces, and in Chapter 6 at the Fuji Frontier around level 32. The paired Shidou and Nue fight happens at the end of Chapter 3 around level 20, again in Chapter 6 around level 35, and finally in Chapter 11 in the Mount Hiei Zone around level 48.

Why is this fight taking so long?

The most common reason is killing Shidou too early. Once he is dead you have to grind down Nue's full health bar alone with no stagger openings from the Siphon interrupt. Damage both bosses in turn and let the automatic lock-on follow whichever one is about to attack.

What we haven't verified

  • No resistance percentages exist for any boss in this game, from any source. Poison is qualitative.
  • No recommended player level. Every figure above is the boss level. Nobody publishes a "come back at Lv X" number and we are not going to invent one.
  • Nue going berserk in the Chapter 11 fight is reported by allthings.how alone. Single source.
  • The 30% Siphon threshold is likewise a single source.
  • Where Black Blossom is actually collected is disputed — some guides tie it to this fight, others to Crimson Malefact. Flagged on the weapons page rather than resolved here.
  • Update 1.0.7 made unlisted boss balance changes. Difficulty impressions below are launch-week; weaknesses, tells and rewards are unaffected. See the patch notes tracker.

Sources