Stray Cat

Stray Cat is a one-shot published six months before ''Black Cat. ''It was featured at the end of Chapter 75.

Story
The story revolved around Train Heartnet, a famous Sweeper who turned into a delivery man.

Common Elements
Common elements included characters such as Train Heartnet, Sven Vollfied, the cat, and Gyanza Rujike. Sweepers and Train's gun were also included.

Variations
Instead of sweepers, Train and Sven were delivery men. Train was a Tao user with abilities similar to Durham Glaster, and Sven had a beard.