These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Riki Oh
Complete Monster: 98% of the antagonists in the story are just that. One or two have Pet the Dog moments and some are forced into fighting due to a family member being held hostage.
Crazy Awesome: If you thought the movie was weird, based off the first story arc, you ain't seen nothing! Cyborgs, men who hide knives in their skin, hypnotic wolf-themed villain, cannibals, and more weird stuff! Riki is pretty much one big crazy awesome himself.