Tohno Shiki's dark persona (sort of) that made his physical appearance in Kagetsu tooya and turned distinct character thanks to the Melty Blood games, mostly distinguished from Tohno Shiki by the look in his eyes and the amount of smugness. Usually tagged as both characters unless there is good evidence to the contrary--for instance, White Len only hangs around Nanaya, and Nanaya doesn't wear glasses.
This was Tohno Shiki's original name before he took Tohno SHIKI's place.
Unlike his counterpart, Nanaya lacks the Mystic Eyes of Death Perception in most of his incarnations past the first Melty Blood game and fights solely using the Nanaya Assassination Arts.
