Mangaman is a giant meh. It pains me to say this because I really like Barry Lyga. I have 3 of his novels in the review queue, all of which I enjoyed, so I found Mangaman confusingly weak.
Basically, Mangaman is a manga character who falls through an “extra-scientific event” and lands in our world. His stress lines manifest as physical lines that float in mid-air, and his appearance changes completely when he experiences extreme emotion.
Mangaman falls in manga-love with a human girl, blah blah blah. I can see where Lyga is going with his East-meets-West collision of cultures and graphic styles, but it’s all kind of cardboard. I don’t even like the texture of the pages on my fingertips.