Kurenai Shirazaki

Kurenai Shiraaki is a main character in highschool DxD: Limitless

Scarlet Feather
Also known as Crimson Flying Fire, Scaret Feather is Kurenai's sacred gear. Normally, it would take the form of a small pheonix which the user could control, but Kurenai's sub-species takes the form of a flame covered sword.