ワンダーガールとラビリンスゲート (Wonder Girl to Labyrinth Gate)

Background
The song focuses on a young girl named Gretel(Rin) and her "brother" Hänsel(Len). The children seems to be lost in the woods and Gretel is afraid of being separated from her brother but he swears to never leave her. After walking for a while, Gretel sees a house made of candy begins to eat, despite claiming that she knows that it's just a trap laid by a witch.

The focus then shifts to the girl's mother(Miku) who looks out the window into the backyard to see Gretel running around holding the doll she found in the woods while laughing about how she's lost. The mother becomes even more worried when she sees the girl is eating saw dust from the backyard shed, believing it to be candy and then sees her drop stones in circles.

When the mother goes out to check on Gretel, the doll, which Gretel believes to be "Hänsel", tells her it's the wicked witch that wants to eat them and Gretel lights the house on fire and shoves her mother into it and then she eats her roasted corpse. Hänsel then tells her to look out the window and she sees her father but becomes convinced it's the devil and stabs him to death. Later she gets a look at herself in the mirror and believes it's a vampire and ends up mortally wounding herself. As the house burns down with Gretel and her parents' bodies inside, "Hänsel" is revealed to be unharmed.