I love this movie, it's not the gore that really gets me, it's the characters. Ichi himself represents this sort of ****ed up version of Milton from Office Space. He gets off on the physical abuse of others, watching women being beaten and raped. It's in essence the darkest, most taboo thing that makes Ichi so terrifying. Not only that, but he has the mind of a child, when pushed too far he goes into a crying frenzy and dismembers whatever is near him. The mixing of a docile manchild and extreme sadist is probably one of the most terrifying things I can think of. I really wish they put out an English translation of manga, it's supposedly even more ****ed up.
Enough of that though, some of the scenes in this film are just so hilariously bad, like the scene where Ichi cuts the pimp in half. It's campy, it's wrong, it's funny, it's sad, awkward, and just a joy to watch.