Natsume Izayoi (ナツメ・イザヨイ Natsume Izayoi?) is the eighth and final member of the Rune Angel Troupe and pilots the Papillon Chaser. She was a princess of the Arms Alliance who initially appeared as an enemy before joining the Luxiole's crew during the fight against the Three Marquis. She is the character counterpart of Chitose Karasuma, while her Emblem Frame shares a similar role to Forte.