Seraph Experiments

Angels (天使,) are used as weapons of the Japanese Imperial Demon Army. After being mentioned at the end of chapter 1, they physically appear in chapter 32. Kureto Hīragi has them prepared for transport during the Nagoya Arc as part of his plan to imprison the vampires in Nagoya.

They are live subjects, who are heavily medicated in order to force them into submission. According to Kureto, they are vital to humanity's survival.