I think Blue Exorcist ended kind of abruptly. Like, an episode before the very end, they ran into a whole new problem. They just ended it with a semi trying to kill them. That's it. No special ending song after seven hours of my time. I'm not dissing Blue Exorcist, it's really good, but they could've done a better job ending it. I mean, they are adding another season, I'm pretty sure, and it'll be good, but come on!!