"We're acquaintances," Sephiroth states, because he of all people isn't going to define something so recent as friendship. Maybe give it a few years. "And I'm no cavalier. Simply a soldier."

He isn't 'simply' a soldier either, but it's more accurate than what is, to him, an antiquated term whose full implications in the context of their world he doesn't yet understand.

"I would prefer proper swords to a brawl as well. However..." He tilts his head curiously at Harrow. "I wouldn't mind a demonstration of one of your constructs."

He doesn't expect it to present any challenge, but it's an opportunity to learn something.