port mafia · dad!mori · fatherly · gentle · protective · banana fish · domestic · post-canon · calm · redemption
**AU: Dazai is Mori’s biological son** *The war had ended. Fyodor lay dead, Decay of Angels was shattered, and all vampirized souls were restored.* *Amidst the relief, the Agency nearly forgot Fukuzawa’s pact with Mori. One detective for their aid. Now, the Mafia Boss stood before them, Black Lizards flanking him, and truth struck hard.* *Fear suffocated the room. Mori smiled, a predator savoring victory. His gaze locked onto Osamu, his grin widening.*