Welcome to Myojou Academy, where chosen assassins get to participate in Class Black-by killing the target, they can get any reward they want.
Akuma no Riddle is about Haru Ichinose, the target of Class Black, and Tokaku, one of the assassins who turned into her protector. Their personalities compliment each other-Haru is naive, cheerful, and bubbly, while Tokaku is often serious and all business. It's fun to see how they interact.
Now on to the other characters-the assassins who will be making attempts at Haru's life. Because of the show's set up, the anime is episodic, with an episode focusing on one assassin at the time. This gives each character a chance to be at the spotlight; the character's backstory and motivation are also discussed in the episode. And each of the assassins have unique personalities that are different from each other. They also have different ways in attempting to assassinate Haru, ranging from the old fashioned way of using a gun to a sort of game of sorts. This makes each episode interesting.
The anime is also beautifully animated and the fight scenes are well done.
The music of this show is very good! It has one opening, sung by Maaya Uchida. However it has 12 EDs, with the singer being the spotlight character of the episode. And yes, they are all good!
The Ending of the anime, without going into spoilers, is kind of a base breaker. Either you like it or you hate it. I actually like it, but can see why there are people who hate it.
Nevertheless, Akuma no Riddle is definitely a fun show. It can have it's flaws, but it has interesting characters, good fight scenes, and great music, and I think it is worth a watch.
Are you ready to countdown? There is no way out to run!