Detective Conan: The Black Magic Wizard of the Detective World

Hanyu Rumi is a wizard who uses evil black magic. He used to have companions, but because the timeline got messed up, a witch who uses red magic wiped them all out.

The messed-up timeline really has nothing to do with the wizard. It's all that damn little shinigami detective's fault.

Unlucky Hanyu Rumi was forcibly burdened with the vast sins of the dead wizards, leaving him a frail, weak man.

To regain his health, Hanyu Rumi needs lots and lots of high-quality souls to offset his sins.

So... to secure a steady supply of souls, Hanyu Rumi seeks out Conan.

Conan: “Hanyu, that's so like you! It's awesome being your partner!”

Kaito Kid: “You're a witch too?”

Ai Haibara: “A wizard? Hah. If you can't handle it, then get out of the way!”