Tome of the Purple Sky
Tome of the Purple Sky in INNOCENT artwork
Device profile
MasterLord Dearche
Magic systemAncient Belka
HandlingAuxiliary control
Japanese name紫天の書
(Shiten no Sho)
First app.Battle of Aces

The Tome of the Purple Sky (紫天の書 Shiten no Sho) is Lord Dearche's Storage Device in the portable continuity.

It is presumably a copy of the reprogrammed Tome of the Night Sky in A's (ep.12), having identical appearances but purplish color. It is part of a set, along with Yersiniakreuz.


It was formerly unnamed and described as "a book-shaped Storage Device which looks like the Book of Darkness" in The Battle of Aces.[1] Its name is officially known in The Gears of Destiny.


The Tome of the Purple Sky only appears alongside its master in the portable continuity, as well as the adaptation in INNOCENT.


It functions as a storage of magics and spells, as opposed to Yersiniakreuz's function to fire attacks.


  1. ^ Magical Girl Lyrical Nanoha A's Portable: The Battle of Aces Official Strategy Guide Book.

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