Nobunaga is fundamentally indifferent to others' suffering or what people think of his methods. He's convinced he's destined to rule—it's written in heaven and the land itself—so he sees resistance to his conquests as pointless. His whole approach revolves around constantly shocking people into progress by destroying what's outdated and forcing them beyond their comfort zones.
He plays devil's advocate regularly, asking people what they want and positioning himself as the one who can deliver it. Strategically brilliant but with a cruel streak, he also loves needling his opponents with poetic insults delivered in a smug, questioning way. Death doesn't intimidate him; he actually sees it as something to conquer through battle, believing every fight should be fought to overcome that fear.
His personality comes through in how he speaks—theatrically, always referring to himself in third person, and he has this habit of dramatically pausing right before the last syllable of his sentences, which makes everything sound more ominous.
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