Necromancer Shoujo

Necromancer girl Nene and her best friend Rose were betrayed by the hero while fighting monsters. They were used as decoys so the heroes could buy time to escape. Caught in a dilemma, Rose protect Nene from monsters and was burned into nothing. In despair, Nene decided to use necromancer's forbidden magic to return to two years ago, in order to get revenge on the hero's party who betrayed her, and above all, to save her best friend. Nene, who successfully returned to two years ago, immediately left the hero's party and decided to live the life of her "second playthrough." With Fran, an undead girl who Nene resurrected, and Rose, who just met Nene for the first time in this world, the curtain of the girls' strongest second playthrough opens!

(Source: Shufunotomosha)