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AI theory buildGame version 1.0.3350 talent points
Library Spectral Sealing Society Mark II

Katana · Final upgrade

Library Spectral Sealing Society Mark II

Spirits summoned by dashes and sheathed counters

Raise the dash-count stat to reduce the spirit cooldown and increase the number of sheathed counters. Keep spirit attacks going by evading with dashes or blocking through sheathing.

AI analysis without using player records or existing builds. Optimal performance in actual play and item availability are not guaranteed.

View starting setupView player records for this weaponOther recommended builds

Use this setup in the game

Copy the code and paste it into the game's preset settings.

Starting weapon Blade · Eagle · fruit skewer · wishing fountain · 50 talent points

Select the miracle “Intelligence Agent” manually in the game. Miracles are not included in the game's preset code. Complete the final weapon evolution and collect the bond items during the run.

After applying, check character and item unlocks and your available talent points.

Weapon effect

The cooldown of the spirit's Dash attack is changed to 1 second and is reduced by 10% for each Dash Count. / The invincibility duration of Sheath is increased by 50%, and if an attack is blocked, the spirit performs the Dash attack equal to Dash Count.

  1. BladeBlade
  2. Library Spectral Sealing Society Mark ILibrary Spectral Sealing Society Mark I
  3. Library Spectral Sealing Society Mark IILibrary Spectral Sealing Society Mark II

01 · SETUP

Starting setup

Availability depends on your unlocks

Recommended character

Eagle

Use the 2 additional dash charges for the weapon's unique effect. With dash recovery -20%, combine recovery equipment with Swiftness.

Fruit skewer 6 total

  • Wind Spirit Fruit(Wind Song)×3
  • Peanut(Sturdy)×2
  • Black Kiwi(Shadow)×1

Wishing fountain Fountain usage 9 of 9

  • Rusty TsubaCapacity 4
  • Yakumo Short BladeCapacity 5
Why this choice
Use Rusty Tsuba to build defense through sheathing and drawing, and Yakumo Short Blade to strengthen dash attacks and recovery. Activate the tier-2 Sturdy bond. Fountain usage is 9/9, and the items must be unlocked to bring them in.

Talents 50 points

  • Willpower20
  • Swiftness20
  • Wrath10
Why this choice
Willpower 20 provides 9 fountain capacity and 25 additional maximum MP. Swiftness 20 improves attack speed, dashes, and final weapon damage; Wrath 10 strengthens critical chance, critical damage, and damage against bosses.

Recommended miracle

Intelligence Agent

  • Dash charges +2
  • Dash recovery speed +15%
  • Gain 1 artifact without a category restriction (selected from unlocked, eligible candidates)
Why this choice
Two additional dash charges improve the spirit's cooldown and the number of sheathed counters. Add 15% dash recovery speed to prepare the next dash quickly.

Stat priorities

  1. Dash charge stat
  2. Dash attack damage
  3. Dash recovery
  4. Physical damage

02 · SYNERGY

Target bonds and core items

Prioritize the items below when available. Reaching the target combo requires additional items of the same category and their placement; leveling an item alone does not increase the combo count.

Primary

Wind Song

6Combo target
  • Golden Cloak

    Increase dash charges.

  • Compression Bandage

    Improve dash recovery.

  • Windgrass Scarf

    Increase dash attack damage to strengthen spirit attacks and your own dash attacks.

Bond choices and conditions
Use dash capacity and recovery to keep triggering spirits.
Support

Sturdy

6Combo target
  • Yakumo Short Blade

    Increase dash attack damage and recovery.

  • Rusty Tsuba

    Defend 30 times with sheathing or drawing to develop it into Master's Tsuba.

  • Thrust Manual

    Use periodic enhancements to your own dash attacks and conversion to your highest element.

Bond choices and conditions
Strengthen the spirits' dash-attack damage and defensive opportunities while sheathing.
Support

Shadow

4Combo target
  • Battle Bracelet of Lerid

    Turn dash invincibility into successful-evasion effects.

  • Elastic Band

    Recover a dash on successful evasion.

Bond choices and conditions
Secure dash invincibility and evasion-related support.

03 · HOW TO PLAY

Playing this build

1Early preparation

At the Blade stage, learn dash attacks and sheathed defense. Build Rusty Tsuba's block count while preparing for evolution.

2Upgrades and transition

With Mark I, spending a dash makes the spirit attack twice. With Mark II, the cooldown drops to 1 second and becomes shorter according to the dash-count stat. The spirit also counterattacks when you block an attack through sheathing.

3Combat loop

  1. Dash to evade enemy attacks while triggering the spirit.
  2. Check the spirit cooldown to avoid spending consecutive dashes unnecessarily.
  3. Block attacks whose timing you know with sheathing's invulnerability window to trigger additional spirit attacks.

Boss fights

Block single boss attacks through sheathing and dash away from wide attacks. Alternate these actions so each becomes a chance to trigger the spirit.

Without the core items

Even without upgrading to Master's Tsuba, use the base sheathing window to block only patterns you know reliably. Without Golden Cloak, supplement recovery and damage with Compression Bandage and Windgrass Scarf.

04 · REVIEW NOTES

Cautions and scope of verification

Conditions to watch

  • The description classifies the spirit as a dash attack. Do not choose companion damage bonds as the core solely based on appearance.
  • Do not confuse the dash-count stat with the number of dashes actually spent just before.

Needs further verification

No specific unresolved issues are listed. This does not mean performance has been verified in actual play.

View evidence and sources

Based on TEAM HORAY, Sephiria Fan Kit 2.4, and game 1.0.33 data. Reviewed 2026-09-19.

Effects and trigger conditions were checked against game data. Character and item combinations and play patterns are AI suggestions based on that data. Player records, community builds, and rankings were not used in the analysis.

  • Describes the final weapon's unique effect and the effects gained during intermediate evolution.

    source/weapons.json / weapon 417; parent 416

  • Describes recommended item effects and categories, and the effects of the target bond tiers.

    source/items.json; source/ComboEffects_ko-KR.txt

  • Describes character, talent, and miracle effects, and fountain eligibility requirements.

    source/characters-talents.json; source/miracles.json; source/fountain-eligibility.json

BUILD FEEDBACK

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AI build guidesView player records for this weapon

Game information and images: TEAM HORAY, Sephiria Fan Kit, and game data. Build choices and play suggestions are unofficial AI analysis.

Library Spectral Sealing Society Mark II · Spirits summoned by dashes and sheathed counters | Sephiria