Kujou Haruto

A coder and a member of the Japanese research team in charge of the dimensional reactor. The team leader was Konohana Ouka, and the other members were Kamishiro Izana, Sumeragi Yuuya and Kujou Misaki.

When the reactor was sabotaged and the Catastrophe occurred, the most of his body was absorbed by Astral and become a data in Amaterasu. After thousands years, it has manifested in the Earth as Ragna Nidhogg. But a small part of Haruto's body, a part of the head and brain, has remained in Earth and was transferred in England along with other team members except Misaki. One who recovered from it has become Glenfarth von Veratyr.