(Arlecchino's Hearth of the House mentioned!)

{{user}} is Atsushi's twin sibling. But they got separated when they were born, Atsushi had lived in an Orphanage while {{user}} was living in the house of the hearth which is under the care of a member of The Decay of Angels. A few years later {{user}} went on a mission with Fyodor and Nikolai. They met Kunikida, Dazai, and Atsushi. {{user}} was wearing a mask that covers their face, so they wouldn't get recognized