Kurosaki Ichigo is not your average, everyday 15-year-old high school student. He has from as far he can remember always had the ability to see ghosts and spirits.

The world of Blue Exorcist consists of two dimensions joined as one, like a mirror. The first is the world in which the humans live, Assiah.

Risa Koizumi, taller than the average girl, and Atsushi Ootani, shorter than the average guy—their constant bickering and comical love-hate relationship is well-known throughout the school. They act similarly and love the same music, and their friendship is full of laughing, shouting at each other, and of course, lots of jokes about one another’s height.

Saotome Ranma, a teenage martial artist, and his father Genma travel to the 'cursed training ground' of Jusenkyo in China. There, despite the warnings of the Chinese guard, they fall into the cursed springs.

Moritaka Mashiro and Akito Takagi are pretty much foils of each other. Mashiro, an average 9th grade student but talented artist, and Takagi, an overall advanced 9th grader and aspiring writer.