Osananajimi wa Yami Ochi Seijo!幼馴染は闇堕ち聖女！; The Saint that the Childhood Friend fell in Darkness!; Teman Masa Kecilku adalah Orang Suci yang Telah Jatuh Ke Dalam Kegelapan!; Orang suci yang teman masa kecilnya jatuh dalam kegelapan

20 years ago, the "saint" Almaeira was killed for an innocent crime and was brought back to life as the "witch king" by the demon king. And there was another magician who crawled up from the depths of the underworld. His name is Yoal Yaotl. In order to retrieve his childhood friend who has fallen into darkness from the demon king, Yoaru uses everything, regardless of good or evil.