Eiji Otsuka is a professor in the Graduate School of Art and Design at Kobe Design University in Kobe, Japan. He is a leading Japanese theorist of manga, anime, fan cultures and media mix practice. His research interests span ethnography, manga studies, narratology, literature and Japanese animation cultures.
Otsuka is also the creator of popular manga, such as Multiple Personality Detective Psycho, Leviathan, and The Kurosagi Corpse Delivery Service, and the author of a number of novels. For reference, MPD Psycho absolutely lives up to its name. There's a scene where a package marked 'fragile' is delivered to an office, and when they open the box, it's a big drink cooler, about two feet by three feet. They take off the lid, and inside is a woman with all of her limbs severed – only her head and torso remain. The cooler is full of a solution of gatorade and some other liquid, which is keeping her alive (and conscious). Do not read this manga if you are not comfortable with these sorts of images.