Meet the strongest exorcist the world's ever known! Kiyoshi Harai is the world's strongest exorcist--and its most awkward one! Equally afraid of fighting demons, making new friends, and talking to girls, this so-called ultimate exorcist has still got a lot to learn before he can reach his full potential! Kiyoshi might be back at school, but that doesn't mean he's getting a break from his work as an exorcist. When an occult-obsessed classmate shows off the demonic summoning array she and a bunch of other people made with a bit of help from someone online, Kiyoshi is shocked to discover that while it might look ridiculous, the principles behind it are dangerously real!