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Book of the Ritual of the Migratory Locusts
Phantom Books
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Original Name


Romanized Name

Hikō Saigi Sho




Chapter 3 (light novel 7)


It summons a swarm of locusts.





Book of the Ritual of the Migratory Locusts is a Phantom Book used by Dalian to attack the plant released by the Pioneer Book with a swarm of locusts. The Phantom Book is present in The Girls’ Long Night story.

It’s a book written in foreign language.[1]


Miss Roedean somehow found the Phantom Book and asked Dalian to picked it up at the Cadfael School.[1] Migratory locust is the most widespread locust species, and the only species in the genus Locusta. Plagues of these insects can be devastating.[2]


Book of the Ritual of the Migratory Locusts is an agrarian Phantom Book containing a secret weed-withering spell. The Phantom Book uproots weeds from fields. The user is able to summon a swarm of migratory locusts. The black grasshoppers have several inches in length. They fly together in a large number, their wings humming, to devour the plants in their path, as wished by the reader. The Phantom Book may be used to destroy the plant released by the Pioneer Book.[1]


Miss Roedean found some Phantom Books, so Dalian visited the Cadfael School to collect them. The Book of the Ritual of the Migratory Locusts is one of them. Jessica asks about the Phantom Book. Dalian explains that the Book of the Ritual of the Migratory Locusts completely dries up the weeds in the fields.

Dalian and Jessica lose the Pioneer Book, which goes out of control. A gigantic plant is released by the Phantom Book. The girls run to a hill, but they are surrounded by the long vines created by the out-of-control Pioneer Book. Dalian reaches into Jessica’s bag to grab the Book of the Ritual of the Migratory Locusts. The Biblioprincess reads the foreign book in a melodious voice. Soon after, Jessica notices that something fell on her shoulder. It’s a small insect. Many locusts gather in the air and fly towards the alien plant. According to Dalian, the locusts devour all plants in their path. She sinks to the ground. The insects have no power to push back the vines. Dalian can’t use the Phantom Book properly, since she isn’t its true reader. The locusts eventually disappear. There's nothing else holding back the dangerous vines. However, Hugh eventually finds the girls. He uses the Hymn of Hel to destroy the plant. The Book of the Ritual of the Migratory Locusts was probably sealed inside the Labyrinth Library.[1]


  1. 1.0 1.1 1.2 1.3 The Mystic Archives of Dantalian light novel, Chapter 3, volume 7.
  2. Migratory locust. (2020, June 6). In Wikipedia, The Free Encyclopedia. Retrieved 00:29, July 27, 2020, from https://en.wikipedia.org/w/index.php?title=Migratory_locust&oldid=961099217
Phantom Books
72 Sacred Notes of the Shem-ha-mephorash - Atargatis Scripture - Book of a Thousand Sorrows - Book of Adventure - Book of Atonement - Book of Avalon - Book of Equivalence - Book of Fairy - Book of Fetus - Book of Gap - Book of Humanization - Book of Hypnosis - Book of Lifetime - Book of Relationship - Book of Styx - Book of the Eleusis Ritual - Book of the House-Elf - Book of Imprint - Book of Meditation of Supreme Cooking - Book of Oblivion - Book of the Outer God - Book of Paradise - Book of Royal Power - Book of the Sage - Book of the Salamander's Seal - Book of Sleep - Book of the Descendant of the Mist - Book of the Feast of the Dead of the Windowless Hall - Book of the Flatterer - Book of the Jealous Girlfriend - Book of the King's Coffin - Book of the Ritual of the Migratory Locusts - Book of the Silver Well - Book of Those Who Want Beauty - Book of Twilight - Book of Wisdom - Catalogue - Collection of Visions - Crastinus Dies Nunquam Sciat - Decorative Plywood of Merneith - Depiction of Mountains and Rivers - Divine Encyclopedia of the Yin Kings - Divine Pattern of Floating Silk - Faceless Book - Fata Morgana - Go in an Instant - Hezār Afsān - Hymn of Hel - Logbook - John Wilkes Booth’s Diary - Kairos’ Dynastic History - Loge - Memories of That Day - Old Bradshaw’s Timetable - Pioneer Book - Phantom Book of Resurrection - Phantom Score - Rahōto Reihō Kaigen - Ritual of Reality - Template Book - The Aggregate of Burning Golden Beads - The Clay Tablet of Ugarit - The Dictator's Book - The Great Queen Poem - The Harlequinade - The Nāgārjuna’s Manuscript - The Ophiuchus Manuscript - The Pedigree of All Creations - The Sage's Slate - The Scent God's Scripture - The World - Vignette of Eternal Twilight

Phantom Book Eggs - List of Phantom Books