Reika Amatsu is a major character, and main heroine in the story, DxD: An Unorthodox Story. She is the girlfriend of Issei Hyoudou, and much to the shock of others, is perfectly fine with him having a harem. Reika is also a half-angel, and was once a member of the Catholic Church, serving as Xenovia's senpai before leaving. She was very well respected, having earned the title, "The Scarlet Blade" by many of her peers. In the past, she once held a deep hatred for Devils, and hunted them down mercilessly, earning another name in the process; "The Crimson Reaper."