Jiraiya's expression fell. "Yeah. About that. Hazō, what are the two holy grails of shinobi warfare?"
"Flight and armour," Hazō said promptly. True flight could not be accomplished by ninjutsu or sealing; generations of sealmasters and technique hackers had tried and failed. Even Hazō could only cheat—which admittedly was what ninja were supposed to do. As for armour… armour ninjutsu did exist, but it was very rare, and guarded more closely than a dragon's treasure by the elite few who possessed it. Hazō's ability to facetank twin explosive tags demonstrated why.
Hazō's ability to facetank twin explosive tags… Ah, crap.