TouyasRoastedGrave
What if the Demon Prodigy wasn't the only Dazai left in the dark?
Years ago, Osamu Dazai left more than just the Port Mafia behind; he left a sister who had no one else. This AU explores a darker timeline where Tenshi Dazai, abandoned at twelve and left to the mercies of the streets, is "found" by Mori Ogai.
Instead of an ability-born construct, Mori finds a living, breathing void-a girl with no sense of pain (CIPA) and a detached soul (ASPD). Under his twisted tutelage, Tenshi is molded into the "Shadow Executive," a silent predator whose neural-warping ability, The Masque of the Red Death, makes her the Mafia's most terrifying secret.
The world knows Dazai as the suicidal detective of the ADA. They have no idea that in the shadows of the Port Mafia HQ, another Dazai is waiting-one who has been groomed to obey, trained to kill, and taught that the only warmth in the world comes from the man who replaced her brother.
Author's Note:
This is a Personal Alternate Universe (AU) centered on my OC, Tenshi Dazai. While I aim to stay as true to the Bungo Stray Dogs world as possible, this story features significant divergences from canon and potential out-of-character (OOC) behavior driven by the changed circumstances of the characters. Specifically, Mori's relationship with Tenshi is portrayed as deeply manipulative and psychological. Please be aware that this story deals with heavy themes, including grooming, psychological trauma, and the realities of living with ASPD and CIPA.