Roronoa Zoro and Magnus Chase
There was only one sword that Jack would've really been able to sweet talk and that's the one that's been with Zoro since he was nine, the Wado Ichimonji. It was a sword that had belonged to a very close friend of his that he'd lost and he'd been given the sword in order to fulfill his and Kuina's dream.
"It's natural." Dying one's hair wasn't even really a concept that he got into. It wasn't until he got to Madison Valley that he'd noticed people who did that kind of thing. "No, not a demigod. Just a kid from the East Blue." Though, he watches Magnus for a moment," So this person of yours has green hair because of this Loki person?"