So this is for kita mikichi's "Read Me!!" Challenge!
I started reading Soul Cartel this summer.
And here is Mephistopheles from Soul Cartel.

Here is where I read it: http://www.mangahere.co/manga/soul_cartel/
If you want to jump straight to the manga, here is link to first page: http://www.mangahere.co/manga/soul_cartel/c000/