Kaketa Tsuki no Mercedes ~Kyuuketsuki no Kizoku ni Tensei Shitakedo Suterare Sounanode Dungeon wo Seihasuru~ @COMIC

Alternative

Mercedes and the Waning Moon: The Dungeoneering Feats of a Discarded Vampire Aristocrat / Kaketa Tsuki no Mercedes ~Kyuuketsuki no Kizoku ni Tenseishitakedo Suterare Sou nanode Dungeon wo Seihasuru~ @COMIC / 欠けた月のメルセデス～吸血鬼の貴族に転生したけど捨てられそうなのでダンジョンを制覇する～@COMIC