Swallowtail / Lets Go See a Movie Full Guide: Reality Refuge Arc, Anima Weakness, Hovering + Mirror-Phase Parry Force-Out Mechanic

Key answer: Swallowtail / Lets Go See a Movie is at the Floe Cinema in New Hereland District (Camelot Avenue), weakness Anima. Constant hovering → you must bring a ranged character (Jiuyuan is best). Parry during the mirror phase to force the boss out → unload your Ultimate is the core strategy. First clear guarantees the S-grade Reality Refuge Arc (Jiuyuan signature weapon). The Jiuyuan Creation Team is BiS. ⚠️ The official Traditional-Chinese name is “斑蝶” (not 燕尾蝶 / 蝶影).

ℹ Naming note: The in-game official Traditional-Chinese name is “斑蝶,” English Swallowtail (of the swallowtail butterfly family); some players also call it “燕尾蝶 / 蝶影.” The street is “Camelot Avenue.” This site standardizes on “Swallowtail” and “Camelot Avenue.”

“A giant, lumbering butterfly that drags movie ticket stubs behind it and forever yearns for the sky” — Swallowtail drops Jiuyuan’s free signature weapon “Reality Refuge,” and its dual hovering + mirror mechanics are a twin test of ranged damage and parrying. This guide lays out the location, moveset, and mirror-phase strategy all in one place.

1. What Is Swallowtail

Item	Details
Official zh-TW name	斑蝶 (consistent across Entertainment Taxi, Mobile01, 4Gamers)
English name	Swallowtail
Anomaly Commission name	Lets Go See a Movie
Anomaly type	High-Risk Anomaly / Anomaly Hunt Boss

Background: Game8 describes it as “a giant, lumbering butterfly that drags a long string of movie ticket stubs behind it and forever yearns for the sky.” Its theme is tightly bound to “cinema / Floe Cinema” (ticket stubs, projector, screen mirror). “Forever longing for the sky” maps directly to its constant hovering in combat.

2. Location and Unlock

Location

• Area: New Hereland District
• Landmark: Floe Cinema (an ice-crystal-looking building)
• Street: Camelot Avenue ⚠️ NOT “Chida Avenue”
• Trigger point: The projection room at the far end of the second floor inside the cinema — interact with the projector to enter the Anomaly space

Unlock Requirements

Requirement	Value
Hunter Level	≥ 32 to accept, 35+ recommended before attempting
Main story progress	Progressed to New Hereland District — Camelot Avenue (unlocks Floe Cinema)
How to accept	Map → Anomaly Commission menu → “Lets Go See a Movie” → accept and track

Route to the Boss

1. Teleport to Floe Cinema, enter through the front door
2. Take the stairs on the left up to the second floor
3. On the second floor, keep turning left and run to the very end
4. At the end, turn left again → enter the far projection room
5. Interact with the projector / camera → enter the Anomaly space

3. Element and Weakness

• Weakness element: Anima — confirmed
• Resistances: No specific resistance listed; but during the “mirror / dive phase it gains full damage reduction and becomes much tankier” (a mechanical damage reduction, not an elemental resistance)
• Stagger: Anima quickly breaks the stagger gauge; focus-firing right after a break is the most efficient

4. Moveset + Hovering Mechanic

⭐ Core Mechanic: Constant Hovering

Swallowtail stays airborne the entire fight — melee characters whiff constantly. Ranged characters (especially firearms) are the key to stable damage; melee teams must lean on aerial combos / mobility skills to stick close.

Move List

Move	Counter
Tracking Shots	Dodge and reposition
Beam	Side dodge
Three-Hit Slam	Big wind-up, can be parried
Five-Hit Combo	Can be parried
Spinning Tail Sweep	Dodge / Parry
Tail Strike / Tail Slam	Can be parried
Scale Scatter / Scale Powder	Scattering scale powder often comes with a teleport; dodge then re-lock
Burrow Ambush (below 50% HP)	Burrows underground and bursts out with a thrust from a water-ripple marker; read the ripple to predict it → Parry / pre-place an AoE

Parry vs Dodge

• ✅ Can parry: Three-Hit Slam, Five-Hit Combo, Tail Strike, etc. (obvious wind-up); parrying the burrow-out attack is the most effective
• ❌ Dodge instead: Tracking Shots, Beam

5. Combat Phases (Three Phases)

Phase 1 (100%–about 60%): Damage Window

• Slow movements, big wind-ups; go all-out to push HP down, and use parries to create big openings

⭐ Phase 2 (about 60%–20%): Mirror / Dive Phase (the most critical)

• Swallowtail dives underground and enters the mirror, attacking from within the mirror
• ⚠️ Throughout this phase it has damage reduction and is much tankier — brute-forcing it is inefficient
• Correct process:
  1. The moment the mirror appears, stop attacking and watch the reflection
  2. Parry the mirror’s attacks — do NOT dodge → a clean parry forces Swallowtail out of the mirror + opens a brief weakened window
  3. Immediately unload your highest-damage skills / Ultimate into the window (it’s very short, so always bank your Ultimate beforehand)
  4. Repeat this loop every dive cycle
• Also watch for “Burrow Ambush”: read the water ripple to judge the burst-out point

Phase 3 (below 20%): Mechanical-Arm Berserk Phase

• Grows mechanical arms, attacks get stronger and force pursuit
• Use Anomaly skills / Ultimates to interrupt, then focus-fire to delete it after a stagger break

Note: Sources differ slightly on the HP that triggers the mirror (Game8 says ~50% vs. the zh-TW 60%/20% split); in-game values are authoritative.

6. Drop Rewards

First Clear (100% guaranteed)

• 🏆 Reality Refuge — an S-grade Arc (Jiuyuan’s signature weapon), free
  • At max level: base ATK 570, sub-stat ATK +30%
  • Core effect “Swallowtail”: Anima DMG +15%, possession DMG +10%, and for 6 seconds after casting your Ultimate the possession bonus rises to +20%
  • Fits: Jiuyuan, Nanally, and other Anima DPS (in-game values are authoritative)

Full Arc details in the Jiuyuan Full Build Guide.

Weekly / Repeat Challenge (Anomaly Hunt)

Drops Coal Lump’s Gift, which can yield:

• Colored Ticket Stubs (essential character growth / ascension material)
• Hunter EXP, Beetle Coins, Arcane Threads / Magic Threads

High-Risk Variants

After the first clear you unlock 6 difficulty tiers (Lv 45–90); tiers 5–6 add mechanics like Overload, Flash Moment, Hunter’s Gaze, and Perfect Rhythm.

7. Recommended Teams (Anima Weakness)

Multi-source consensus: the core is Jiuyuan (Anima + ranged firearms, a perfect counter to its hovering).

① Jiuyuan Creation Team (best fit for the mechanic) ⭐

Jiuyuan (Main DPS, ranged) + Esper Zero + Hathor + Sakiri / Fadia

Jiuyuan’s gunfire reliably hits the airborne Swallowtail; the “Creation” auto-tracking plants stay locked on even when the boss teleports

② Nanally Hypercarry Team

Nanally (Main DPS, Anima) + Esper Zero + Skia + Edgar

③ Charge Team

Hathor + Jiuyuan + Mint + Edgar

Emphasizes a fast charge-Esper loop to quickly regen Ultimate energy (matching the “parry to force out the mirror then immediately fire your Ultimate” loop)

Team-building rule: at least 1 ranged Anima Main DPS + stagger break (Jiuyuan) + support (Sakiri) + healer / tank (Fadia / Edgar).

8. Combat Tips + Common Beginner Mistakes

Tips

1. Ranged characters are your lifeline: Jiuyuan (firearms) deals stable damage regardless of height; melee teams rely on aerial / mobility skills to stick close
2. ⭐ In the mirror phase, “only parry, don’t brute-force”: parry the mirror’s attacks → force the boss out → unload your Ultimate in the opening window
3. Bank your Ultimate before entering the mirror phase: the weakened window is extremely short, so build up your Ultimate energy in advance
4. Read the ripple to predict the burrow-out: below 50% HP it burrows frequently; the water ripple = the burst-out point
5. Prioritize stagger break + bring a healer (for higher difficulties)

Common Beginner Mistakes

❌ Mistake	Consequence
Using a pure melee team	Can’t hit the airborne boss, whiffing the whole fight → always bring ranged (Jiuyuan is best)
Keep attacking hard during the mirror phase	Boss has damage reduction, so you waste damage and may eat a counter → switch to Parry
Dodging the mirror’s attacks instead of parrying	Dodging can’t force the boss out, so it stays tanky
Entering the mirror / berserk phase without a banked Ultimate	You force the boss out but have nothing to unload, wasting the opening window
Charging in underleveled	35+ recommended, 32 is the floor

9. Related Guides

• Anomaly Boss Full Bestiary — overview of all 18 bosses
• Serenetti / Mammon / Headless Rider / Beat King / Nestbound Bird / Black Tome / Arachne — other popular bosses
• Jiuyuan Full Build Guide — the owner of Reality Refuge
• Elemental Reaction System — Creation reactions

FAQ

Swallowtail data compiled from Game8, GameWith (EN/JP), Game Rant, Nerdschalk, AllThings.How, TheGamer, Entertainment Taxi, Mobile01, 4Gamers, LDPlayer, Bahamut, and other public sources. The official zh-TW name (斑蝶), street name (Camelot Avenue), mirror-trigger HP, and Arc values follow the in-game values as authoritative.