Guren Ichinose/Relationships

Yūichirō Hyakuya
When Yuuchiro wanted to kill vampires, Glen took him in and trained him to become a soldier of the Japanese Imperial Demon Army.

Shinoa Hīragi
She is Glen's subordinate assigned to become the advisor of both Kimizuki and Yuuchiro. Shinoa seemed to show loyalty and respect to Glen, but later became suspiscious towards him after she discovered that Yuuchiro was experimented on and questioned Glen what his real intentions for Yuu were. Moreover, she seemed angry when she realized that Glen killed her sister Mahiru and made her his demon weapon.