Trinity Seven
Season 1, Episode 10: Game Master and Satan Slave
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The ultimate demon lord, Astral Trinity, shows up in the form of Arata with a grotesque new appearance. Hijiri appears as well, and the others discover that she is a high-level mage whose goal is to kill Arata and destroy the school.
All Episodes - Season 1
Episode 1
Administer and Third Selection
Episode 2
Prison Lock and Grimoire Security
Episode 3
Magus and Alchemist
Episode 4
Labyrinth and Magic Gunner
Episode 5
Dream World and Sub-Administer
Episode 6
Dark Mage and Big Event
Episode 7
Lost Technica and Problem Solving
Episode 8
Study and Holiday
Episode 9
Bible Battle and Sweet Memory
Episode 10
Game Master and Satan Slave
Episode 11
Fianna Knights and Sisters
Episode 12
Criminal Girl and His World