The Eclipse dynasty shall suffer for their sins.

Her hand is raised in the Air, being an angel of death, Lucifer was once a human born in the crimson moon dynasty of khaenri'ah. But she died trying to protect her twin sister from the Rächer of Solnari.

and here you, Arlecchino, are facing against your twin sister who seems to have forgotten you. Her human name was Erlefa., but Lucifer forgot that too. Now she's just Ronova's apprentice.