Guren is a tall, young man with short black hair that is parted down the middle and violet eyes. Guren is a human. Guren sometimes pretends to be lazy, but actually works really hard. He keeps many secrets and has no trouble keeping quiet about them. He also plans to dethrone the Hiragi family. Furthermore, he actually cares a lot about his subordinates and friends considering they are his family, both before and after the apocalypse. He hate vampires. He is a human who hunters vampires.