It's about a 101th battle between the Angel Ios and the Demon Sword. As they fight they injury each other and fall on earth very badly injuried. Each of them will posses a human body, which turns out both of those guys bodies are actualy twin brothers.
As the story goes on, they fight with various devils and trying to find a way to get back to their original bodies and regain their power.
The Art is fascinating. You can see little details which are left out in other mangas and it's good for an action manga.
The characters have each their interesting part. Good and Evil.
If you put all this together it is pure enjoyment to read "Devil and Devil". Some chibi drawings, which makes it funny. Serious drawin and very detailed. which makes u stop from reading and try to make the scene very realistic.
Overall i'll give it a 10.
