A Mystery (dazai x reader)

**Story Description:**
The Second World War ended long ago, but its scars still linger in the shadows. Hidden from the world, secret laboratories continue their twisted experiments-on children. (Y/N) and her brother Kai were nothing more than test subjects, stripped of their pasts and reduced to mere numbers. Kai, labeled 0001 Bomb Resku, was a weapon of fire. But (Y/N)? She was something even worse-an unstable failure.

That's what they believed.

Until the day she broke free.

With the power to copy abilities, (Y/N) is neither hero nor villain-just a girl shaped by bloodshed and survival. But the more she steals, the more she loses herself. When the infamous Port Mafia takes an interest in her, she must decide: is she a monster made by others, or will she become the one in control?

In the dangerous city of Yokohama, where ability users rule the underworld and the Armed Detective Agency fights for justice, (Y/N) will carve her own path. Whether in shadows or light... she will not be forgotten.

A Bungou Stray Dogs fanfiction filled with action, dark pasts, and a girl who can take any power-at the cost of her own humanity.