The sorceress Elluka incarnated Michaela, a spirit who served Held, as a human. She was probably going to use her to collect the vessels of sin.
This Michaela seemed to be friends with a white-haired girl... No, lovers?... It was inevitably doomed either way.
— Ma's commentary in the EVILS COURT booklet
The forest spirit Michaela(Miku) is watching a human girl, Clarith (Haku), pray to god for friends. Michaela pities her and wants to grant her wish but can't since she's a spirit, however Elluka Clockworker(Luka) comes nad gives her a human body.
After beginning her life as a human being, Michaela becomes confused by Clarith's constant depression and befriends her, promising to protect her. They later run off together to Acied and make a living working for the Freezis family and Michaela begins to understand what it's like to feel joy whenever she's in Clarith presense.
One day, King Kyle Marlon (KAITO) comes by and proposes to Michaela after falling in love with her but his fiance Riliane finds out and commands that every woman with green hair is killed. In the mayhem, the girls are forced to separate and Michaela finally realizes she was in love with Clarith all along, they promise that if they live through the war, they'll elope and live in Held's forest. But after going into hiding, Micahela is stabbed by Ney Futapie who disguised herself as Allen Avadonia. Before dying, she wishes to be reborn.