, also known as Hazama
, is a member of the Six Heroes
, as well as the creator of the Azure Grimoire
. Before the arrival of the Black Beast
, Terumi worked alongside Relius Clover
and Shūichirō Ayatsuki
on an experiment to examine the Sheol Gate
. Unfortunately, the Black Beast emerged out of the Cauldron
, killing Shūichirō and Terumi in the process. Terumi reappeared as a ghost and, with the assistance of Relius, was revived in an artificial body
made in his likeness.
After his revival, he was attacked by Tomonori, Jubei's brother. Terumi emerged victorious, winning the fight with his signature Nox Nyctores, Geminus Anguium: Ouroboros, and killing Tomonori in the process.
Soon after, he was cursed with the spell Ruby: Mind Eater
by Konoe A. Mercury
, who used him as a puppet during the battle with the Black Beast. He eventually manipulated Trinity Glassfield
, who had feelings for Kazuma Kuvaru
prior to his fusion with Terumi, into releasing him from the spell.