Kaketa Tsuki no Mercedes: Kyuuketsuki no Kizoku ni Tensei shita kedo Suteraresou nanode Dungeon wo Seiha suru

Reborn as Mercedes Grunewald, a vampire noble, her life is far from a fairytale. As the daughter of a shunned concubine, she lives with the certainty that her father will one day choose another heir, casting her and her family aside. With an unskilled mother and an elderly maid, their future looks bleak. Refusing to accept this fate, Mercedes makes a bold choice: she will become a dungeon crawler. While other children play, she trains, harnessing her vampiric potential to build the strength and fortune needed to survive on their own. This new life is her chance to find the fulfillment she never had, one dangerous dungeon at a time.