English translation in progress. Untranslated passages remain in Japanese.

E.G.O 0211 · WAW

Hollow

FaustPridePerson with a Hole?S8 Free Pass Lv80

Risk Level: WAW
SP Cost: 15/25/38
Resource Cost: Gloom ×2Pride ×4Envy ×2E.G.O usable with these resources →
Resistance: ×2×1×1×2×0.75×0.5×0.5

GUIDEMechanics and How to Use

At a Glance

A Pierce E.G.O that prepares with Le Trou on the first turn, then on the next turn fires Boucher un trou, a 7-target attack, without resources to gain large amounts of Poise and Charge.

Core Mechanics

Le Trou: The first time it is used in a battle, its Sanity cost and requirements are reduced (2 Gloom, 2 Pride, and 2 Envy less). It cannot Clash and does not hit enemies; she gains 5 Ashen Bullet, Poise, Charge, and Black Wings.
Boucher un trou: A multi-target attack that activates while she has Bullets. Before attacking, she spends all Bullets to gain Poise and Charge, with +8% damage per Bullet. It reuses an Unbreakable Coin (Bullets spent − 1) times, up to 4.
Reuse without resources: Through the passive, it spends no resources when she has 5 Ashen Bullet. She gains 1 Bullet each Turn Start, so after firing it, she can fire it again without resources after a set number of turns.
Damage source: Deals more damage the fewer targets there are, +100% against a single target at Threadspin Ⅳ. Poise Potency plus Charge Count also raises Clash Power.
Support at Threadspin Ⅳ: After Boucher un trou's attack, gives Poise to 2 + (highest Resonance) allies, up to 7.

How to Use

Fire Le Trou first to reach 5 Bullets, then fire Boucher un trou on the next turn.
With fewer than 5 Bullets, its effects weaken and it requires resources, so build up to 5 whenever possible.
It helps Identities that use Poise or Charge get started. The Corrosion skill cannot distinguish friend from foe and can hit allies, so Awakening is likely easier to use.

A practical guide based on the skill and passive descriptions below.(Updated: 2026-10-18)

ANALYSISThreadspin

Ⅱ: Unlocks the passive.
Ⅲ: Raises Boucher un trou's power, damage bonus, and Clash Power cap. The Corrosion skill also gains Poise infliction.
Ⅳ: Further raises the damage bonus and adds Poise for allies to Awakening.

SKILLSSkill

Awakening

Le Trou

Pierce

Clash Power: 6~115~10 → 6~11
Base Power: 65 → 6
Coin Power: +5
No. of Coins: 1
Skill Level: Identity Lv+0
Attack Weight: 1

[Unclashable]

The first time it is used in a battle, Sanity cost -5 and required E.G.O resources reduced by 2 Gloom, 2 Pride, and 2 Envy

Activates as Boucher un trou if this unit has 1+

This skill does not hit enemies and does not trigger Defense skills. Cannot be reused by external effects

After Attack Gain 5

After Attack Gain 5 Potency

After Attack Gain 3 Count

After Attack Gain 5 Count

After Attack Gain 4

Awakening

Boucher un trou

Pierce

Clash Power: 5~74~5 → 5~6 → 5~7
Base Power: 54 → 5
Coin Power: +2+1 → +2
No. of Coins: 1
Skill Level: Identity Lv+3
Attack Weight: 7

This skill cannot be reused by external effects

Damage +5/10% per 1 target fewer than this skill's Attack Weight (judged by parts in Focused Encounters)

Clash Power +1 per 4 of own ( Potency + Count) (max 5/7/10)

Clash Power +2 per 1 own

Before Attack If there is 1 target, damage +50/100% (judged by the main body in Focused Encounters)

Before Attack Consume all and apply the following

- Per 1 consumed, gain 2 Potency, 1 Count, and 2 Count

- Per 1 consumed, damage +8%

After Attack Give 5 Potency and 2 Count to 2+(highest Resonance) allies (max 7 allies)

If this skill consumed 5 , recover 5 SP

After Attack Gain 1

Reuse this Coin (number of consumed - 1) times (max 4 times)

On Hit Inflict 1

Corrosion

Corrosion skill

Pierce

Clash Power: 7~164~16 → 7~16
Base Power: 16
Coin Power: -3-4 → -3
No. of Coins: 3
Skill Level: Identity Lv+3
Attack Weight: 7

Indiscriminate

Attacks random targets

Clash Power +1 per 4 of own ( Potency + Count) (max 5/7/10)

Before Attack Gain 3 Count and 5 Count

Before Attack Consume own Count above 10, up to 15, for damage +(amount consumed×2/3/5)%

Before Attack If own is at maximum, consume all of it and apply the following to all allies next turn

- Give 1

- Give 1 (1 time per 1 turn)

Before Attack Base Power -3 per 1 broken Coin (max -9)

After Attack Gain 1 and 2

After Attack Give 5 Potency, 2 Count, and 2 to 2+(highest Resonance) random allies (max 7 allies)

On Hit Increase Count by 2

Ⅱ

On Hit Inflict 2

Ⅲ

Normal Coin Unbreakable CoinThreadspin Ⅲ Threadspin Ⅳ mark additions or changes at those Threadspin tiers. Multiple values represent different tiers; the larger value is for the highest tier.

PASSIVEE.G.O Passives

E.G.O Passives

Le Trou de Vidange

At 5 , using the Hollow E.G.O skills (Awakening and Corrosion) consumes no E.G.O resources

At Turn Start, gain 1 and 1

When an ally defeats an enemy, that character recovers 5 SP and receives 1 next turn (1 time per 1 turn)

Maximum Count +5

When gaining Count beyond its maximum, randomly gain Potency or Count equal to the excess (max 6 converted per 1 turn)

A hole is not made by piercing; it comes from absence. A hole longs to be filled, yet overflows instead.

※Unlocked at Threadspin Ⅱ; active from the turn after E.G.O use until the end of battle

SYNERGYTeams and Synergies

The Index Proselyte: 【Paper Slip】: A Poise Identity whose S2 (Pride) and S3 (Gloom) supply some of the required affinities.
MultiCrack Office Rep: S1 spends Charge and S3 gains Charge, and her S2 (Envy) and S3 (Gloom) also supply some of the required affinities.

Team Builds That Suit This E.G.OHollow Farming

KEYWORDSEffect Glossary

Ashen Bullet: - Special Ammo - Maximum value: 5 - This Ammo cannot be gained or increased by external effects other than the "Hollow" E.G.O
Poise: When flipping a Coin, has a [5 × Potency]% chance to deal a Critical Hit. Critical Hits deal 20% more damage. At Turn End or after a Critical Hit, reduce Count by 1.
Charge: Can be consumed to enhance certain skills. Count can stack up to 20. At Turn End, reduce Count by 1.
Black Wings: Max: 12 At Turn Start, gain Charge Count equal to (value÷4) (rounded down) At Turn Start, gain 1 Offense Level Up per 4 Skills that make this unit gain or consume Charge or Poise deal +(value)% damage
Unbreakable Coin: This Coin is not destroyed on Clash Lose. If an attack skill contains this Coin, attack with it after taking damage. On Clash Lose, the Power of the remaining unbroken Coin becomes 1.
Sinking: When hit by an attack skill, take fixed SP damage equal to the Potency (converted to Gloom damage for Abnormalities). After taking damage, reduce Count by 1.
Offense Level Up: For 1 turn, increase Offense Level proportional to the value.
Damage Up: For 1 turn, increase damage dealt with skills proportional to the value (max 10).
Crit DMG Up: For 1 turn, Critical damage from skills increases by 10% per 1.
Attack Power Up: For 1 turn, increase the Final Power of attack skills by the value.