Scarlet (果てしなきスカーレット) (Series)

After failing to avenge her father's murder, Princess Scarlett wakes up in the "Land of the Dead." In this world full of madness, she must take revenge on her sworn enemy. If she does not avenge her nemesis and reach the "Endless Place," she will become "nothingness" and cease to exist. (Source: Official YouTube, translated)