Yoshichika wearing a Logigraph

A Logigraph (ロジグラフ Rojigurafu) is a piece of equipment worn by Logicalists, taking the form of an earphone with a mic.

When activated, the Logigraph says "Judge your logic," then generates a screen in front of the user's eyes. Once on, a Logigraph has a variety of functions, including data analysis, communication, closing gates, and forming covenants. Staff members in an ALCA control room are responsible for analyzing and calculating data sent from Logigraphs.

The voice for the Logigraph units is provided by Suzuko Mimori.


Luck & Logic anime
Characters Yoshichika TsurugiAthenaTamaki YurineVenusChloe MaxwellValkyrieMana AsuhaArtemis
Veronica AnankoNemesisYukari NanahoshiOlga BreakchildShiori TsurugiRentaro TsurugiBelial
Utsutsuno JarnoLuciferQuetzalcoatl
Terminology Another Logic Counter AgencyCovenantDemon godForeignerGateLogicLogic CardLogic Drive
LogigraphLogicalistOvertranceParadox ZoneParadox SickSeptpiaTetra-HeavenTrance (Trancejack)
Music STORYBeyond the CovenantSONGS & MELODY (Album)
Episode List List of Luck & Logic episodes

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