Into a Certain Library's Book

Into a Certain Library's Book is the title for the micro-event held for the 3rd Walpurgis Night.

Overview

Mini Episode

For a full transcript of the Mini Episodes, see The 3rd Walpurgis Night.

The 3rd Walpurgis Night is a Mini Episode taking place some time after the events of Canto VI: The Heartbreaking. Multiple things are shown in this Mini Episode, including changes to Heathcliff, the release of the Mirror of the Wuthering, and the events associated with the Combat Encounters in this micro-event.

Fairy Festival

“	The fairies protect our employees. Everything will be peaceful while you are under the fairies' care.	”
–Description of the 'Normal' difficulty of the Suppression

Fairy Festival is the Abnormality suppressed in this Event. The Abnormality debuted in Lobotomy Corporation as a mostly harmless ZAYIN-class Abnormality that cares for employees that work on it, giving them temporary healing but devouring them if they work on another Abnormality during the period of their care. The Suppression of the Abnormality in Library of Ruina] is much more dangerous, however, as the weakened and starved Fairy Queen desperately tries to sate its hunger by devouring friends and foe alike.

Entities Encountered

Two types of entities are encountered in the Abnormality Suppression: the Fairy Masses and the Fairy Queen. The Fairy Masses are weaker enemies that serve to distract the Sinners, while the Fairy Queen is the boss of the fight: the Suppression succeeds once the Fairy Queen is defeated.

Fairy Festival
Fairy Queen Boss	Fairy Mass

Suppression

The fight is mostly modelled after the suppression battle of the same Abnormality in Library of Ruina, featuring 3 Fairy Mass and 1 Fairy Queen initially onstage. There are two difficulties of the fight, with significantly different mechanisms.

Only 5 Sinners could be brought into battle, and whoever is selected first will be either the Assistant Librarian of History Assistant Librarian of History
- Skill Slot +1
- Heal 15 SP at Turn Start
- Inflicts double the amount of Potency & Count for Burn, Bleed, Rupture, Sinking, and Tremor. (applies to 'Unique' Status Effects as well) (Easy) or Librarian of History Librarian of History
- Skill Slot +1
- Heal 15 SP at Turn Start
Inflicts double the amount of Potency & Count for Burn, Bleed, Rupture, Sinking, and Tremor. (applies to 'Unique' Status Effects as well)
- When an enemy is defeated, 2 allies(including this unit) with the least SP heal 25 SP.
- On Kill, gain +2 E.G.O resource for the Affinity that defeated the enemy; +1 to all E.G.O resources (Hard), and gain an extra Skill Slot on battle start, heal 15 SP on Turn Start, apply double negative Status Effects, and (Hard difficulty only) generate E.G.O resources On Kill.

Unlike the previous Walpurgis Night micro-event, the Suppression itself is fairly straightforward, and behaves essentially like any other Abnormality battle in the game. One notable difference is that instead of leaving behind a corpse, enemies defeated in the battle bursts into pages.

Missions

There are two sets of missions for the Into a Certain Library's Book event. One set of missions relate to the Easy difficulty, and the other relate to the Hard difficulty.

Normal Missions

Easy Missions
Mission	Amount Required	Reward	Quantity
Complete Suppression of Fairy Festival	1	Extraction Ticket	x2
Complete Suppression of Fairy Festival within 10 turns	1	Decorative Banner #36	-
Let Fairy Queen defeat a Fairy Mass in a single Encounter	1	Extraction Ticket	x2
Let Fairy Queen defeat a Fairy Mass in a single Encounter	3	Identity Training Ticket III	x14
		Thread	x20
Complete Suppression without any ally deaths	1	Extraction Ticket	x2
Complete Suppression without any of the allies' SP dropping to -45 SP	1	Identity Training Ticket III	x14
		Thread	x20
Inflict X+ Potency of (Burn, Bleed, Rupture, or Sinking) to a single Abnormality	10	Identity Training Ticket IV	x8
		Thread	x20
Defeat the Fairy Queen with Burn, Bleed, Rupture, or Sinking damage in a single Encounter	1	Identity Training Ticket IV	x8
		Thread	x20
Complete Suppression with the Librarian of History surviving and taking less than 10 hits from the enemies	1	Identity Training Ticket III	x14
		Thread	x20

Hard Missions

Hard Missions
Mission	Amount Required	Reward	Quantity
Complete Suppression of Fairy Festival	1	Extraction Ticket	x3
Complete Suppression of Fairy Festival within 10 turns	1	Free Lunacy	x500
Let Fairy Queen defeat a Fairy Mass in a single Encounter	10	Identity Training Ticket III	x7
		Egoshard Crate	x5
Let Fairy Queen defeat X+ Fairy Mass within a single turn of a single Encounter	3	Extraction Ticket	x4
Complete Suppression without the Fairy Queen defeating any of the Fairy Masses	1	Identity Training Ticket IV	x4
		Nominable Egoshard Crate	x5
Complete Suppression after breaking both of the Fairy Queen's arms in a single Encounter	1	Identity Training Ticket III	x7
		Egoshard Crate	x5
Inflict X+ Potency of (Burn, Bleed, Rupture, or Sinking) to a single Abnormality	20	Identity Training Ticket III	x7
		Thread	x35
Inflict X+ Potency of (Burn, Bleed, Rupture, or Sinking) to a single Abnormality	40	Identity Training Ticket IV	x4
		Nominable Egoshard Crate	x5
Defeat the Fairy Queen with Burn, Bleed, Rupture, or Sinking damage in a single Encounter	1	Identity Training Ticket III	x7
		Thread	x35
Librarian of History defeats X+ Abnormalities with a single Attack Skill	3	Identity Training Ticket IV	x4
		Nominable Egoshard Crate	x5
Complete Suppression without any ally deaths	1	Extraction Ticket	x3
Complete Suppression withou any of the allies' SP dropping to -45 SP	1	Identity Training Ticket III	x7
		Thread	x35
Complete Suppression with Librarian of History surviving and taking less than 5 hits from the enemies	1	Identity Training Ticket III	x7
		Thread	x35
Complete all Missions in both Easy and Hard difficulties	22	Dawn Office Ticket Deco	-