Natsume Izayoi is the eighth and final member of the Rune Angel Troupe in the anime Galaxy Angel Rune. She pilots the Emblem Frame Papillon Chaser. Her background is that of a princess from the Arms Alliance, a federation of planets that refused to join the Seldor Alliance. She initially appears as an antagonist, having been raised to believe that both Seldor and EDEN are embodiments of evil, and she fights against them to uphold what she sees as justice. However, in the anime version of her story, she is portrayed as a childlike princess whose primary motivation for living near the Rune Angels is a simple desire to eat delicious cookies, though she retains her strong sense of justice. As the conflict progresses, the rest of the Arms Alliance abandons her, and she comes to accept the Rune Angel Wing as the true force of justice. This change leads her to join the Luxiole’s crew during the fight against the Three Marquis, formally becoming a member of the Rune Angel Troupe. Her key relationships are with the other members of the squad, whom she initially opposed but later fights alongside. Her development centers on moving from a misguided enemy to a loyal ally, learning to trust the angels and their cause. In terms of abilities, she is a capable pilot of the Papillon Chaser and is known for her unwavering sense of right and wrong, which defines her actions throughout the series.