Zettai Meikyuu Grimm: Nanatsu no Kagi to Rakuen no Otome

Henrietta likes fairy tales. She peacefully lives with the Grimm brothers in a small village. But one day, Henrietta has a dream of being lost in the forest. When she wakes up, the world has completely changed.... There are only Henrietta and Ludwig, the youngest brother of the Grimm brothers, in the village! They decide to go on an adventure to look for other two brothers....