"Shiryoujutsushi Nado Kegarawashii" to Shoukeisareta no de, Mazoku ni Tenshin shimasu.

Synopsis:

The fiancee of the crown prince and the daughter of a duke... I, Rachel Sheringham, was both, and I was able to employ necromancy since I possessed dark attribute magic. I was put to death after being charged with conspiring with demons. I shall come back to life as a lich, with remorse as my strength!