Professor Asuka

飛鳥教授

Professor Asuka was a renowned archaeologist and the father of Ryo Asuka. He is believed to have taken his own life prior to the start of the manga, appearing only in flashbacks and a photograph alongside his deceased wife. It was the professor's notes that revealed to Ryo the truth about the demons and their scheme to wipe out humanity. The Professor's first name is never disclosed in the manga.