Tokyo Ghoul is the best psychological horror manga out there. It's also one of the extremely few series out there where 90% of the characters are amazingly written and interesting. Not to mention the amazing top tier art the series has
I dont think alot of people know this but Eto and Ichika are the only 2 natural half ghouls in the entire series and it seems that natural half ghouls are the only ones who can eat regular foods without problem. That's kinda crazy when you think about it.