Akutabe, a detective, summons devils to solve the troubles of his clients. One day, a low class devil Azazel Atsushi is summoned by Akutabe and is used harshly by him and his assistant Rinko Sakuma.
I saw a glimpse of this anime at a convention earlier, and I haven't been able to find to it again.
It is hilarious, awesome, epic and genious!!! Just watch the first episode and you'll know! (please don't hate on it even if it's not your style plz!)