During the Dark War, he loses his flesh upon the revival of the Black Beast but is then able to conceal himself in the body of Kazuma Kval, thanks to Relius's careful tactics.
After being restrained by Valkenhayn, he is confined inside the Alucard Manor. But is freed when the Black Beast runs rampant by the hands of Nine, who regards his knowledge to high standards. He is kept under control of her spell.
With his cunning and ability to manipulate people, Terumi pulls the strings from behind the curtains, aiding in the establishment of both the NOL and Sector Seven. Furthermore, he kills or nullifies half of the Six Heroes with his own hands. He is sealed away only at the hands of Jubei and Hakumen…combined. Currently, Takamagahara's system allows him to exist in the human realm, albeit only mentally.
After, he forces Noel, who now has the Eyes of the Azure, to acknowledge his presence, binding his exsistance into the realm as we know it. He has revived, completely.
Since, he still uses Hazama's body, and carries out his missions alongside Relius and the Imperator. But, he is once more torn by Trinity's mental attack using Muchorin's powers. <<From Central Fiction's Library Entry, Terumi.>>