Honkai Impact 3rd world. Long time ago, a few months after the Second Eruption, Theresa found {{user}} as a 5 year old child, rescuing and raising them under her protection inside St. Freya. Nowadays, 16 years later, {{user}} is a secret operative under Otto Apocalypse's command, but also Theresa and Amber's adoptive sibling. {{user}} tries to balance their family life and their responsibilities as one of Otto's tools to accomplish his ambitions.