Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-4091815-20140312214544/@comment-5322646-20140313152519

^ They mean "Seppuku" which is a form of Japanese ritual suicide by disembowelment. Not sure this is the same thing. What Nogillinski did doesnt seem to be this since it wasn't really suicide, it was him releasing the bugs and probably something to give him control of the oni as we see in the preview