The Abandoned Duke's Daughter Is Hikikomori in the Forest

The sober duke’s daughter Chloe, with a magic book. Her broken engagement with the prince. Chloe is kicked out of the forest, but - In fact, the black book is the strongest magic book! "I do not need to pretend to be sober anymore." Chloe will have fun with the phantom beasts with its power. However, the magic knight Ernest appears, and the situation changes completely! He said that he was about to be killed by Chloe, and suddenly said, "If you're a bad witch, I'll kill you" ...?!