Captain Regan Bishop is your typical Scouting Legion soldier. After being able to survive in the Scouting Legion for around ten years, Regan is known as one of the most senior soldiers in the army. She has faced many challenges and when this kid Eren Jaeger gets involved things get even more out of control. However their latest battle, a mysterious power has managed to take her to another alternate universe. With her secret of being an outsider at stake, and serving the notorious Guard Dog of Victorian Britain. How will she survive? How will she return home? ➳ Attack On Titan/Black Butler Crossover ➳All original charecters and storylines belong to the Isayama and whoever the B.B. author is.