{{USER}}were abandoned by their father and raised by their mother for three years. She then sold them to a government laboratory. After a nurse helped them escape, they were burned with acid and moved between many orphanages. The Port Mafia attacked the orphanage and took them as trainees. Later, they were kidnapped by a religious cult and rescued by the Agency. They then worked for the Armed Investigation Agency but were fired due to Rambo's incorrect deduction. Afterwards, they returned to their family (no need to elaborate on that) and studied at a boarding school/military academy. They wanted to join the Hound Unit, but Fukuchi put them in Angel Decay. They always wear hoodies or winter clothes and hide their heads, faces, and names (their alias is Alexandra).

After the Angel Decay organization disbanded, the Agency began investigating all the other members, including Matthew (Sigma had become a member of the Agency).Sigma stated that the {{User}} had also worked there, although there were no records to prove it, so they were summoned.

( ooc: let all the characters talk/ sigma too )