I'm doing a secret Santa for my otaku friend on the 19th of December and I know I want to get him a manga book or two, but he has read everything that I have read and much more so I want to get him something he hasn't seen. He likes horror, mystery, action, psychological... basically anything that isn't love manga. He likes manga and anime like shikki, mirai nikki, gunslinger girl, fairy tail, magi, attack on titatn, hellsing, and requiem from darkness. Can you suggest some manga that he might like?
