User blog comment:Neowitch/Blood, Ice and Ashes - Disturbing Moments/@comment-3125914-20120808141228/@comment-4493594-20120808173400

Check, check and check! Eyup, those are disturbing indeed.
 * Franky modifying himself into a cyborg is really, REALLY disturbing if you think about it. I highly doubt he had proper narcotics or antiseptics when doing so. Yesh, that hurts even imagining.
 * Robin must be drinking a lot of milk if her teeth are that strong. And yes, that was pretty painful to watch, too.
 * I think it was better told in the anime since we learn that Zeff lost his leg only when Sanji attempts to attack him. But you are right, him hacking his own leg off with a (not particularly sharp looking) rock and then eating it is definitely disturbing.