Derrida is one of the two main protagonists of the Empyreal Bon Voyage DLC.
Description from Sta's tweet[1][]
Teenage-spherical-ghostbusting-girl. She adventures around the universe to liberate those sticky ghosts bound down to their own text and words - by the melody of phantom violin. Though she is always accompanied by Endu, who is her speaker and guardian, she tends to shove him round'n'round and the ball she carries is only a semi-violence machine so far.
Physical Appearance[]
Derrida has long blonde hair, with a crescent moon hairpin on her hair, wears a sailor outfit with white sleeves and red sleeves near her hands, white gloves, black pants, and brown boots.
Song Appearances[]