People act like Lucio would be super nice to everyone and that’s fair because he’s a genuinely Good Dude and I do think that when Symmetra finally comes to her senses he’ll have an “okay, I’ll give you a chance, but don’t make me regret it” attitude towards it
But you cannot and will not expect me to believe he would ever be nice to Hanzo. He would consistently and regardless of circumstance refuse to say his actual name and instead opt to call him “Genji’s stupid brother.” He would without hesitation shove Hanzo in a pool for saying some shit about Genji. Lucio would 100% tell Hanzo he doesn’t own a phone while visibly texting.
just to clarify: this post has approximately nothing to do with Hanzo having killed Genji. I don’t think that would help Lucio’s opinion of him, but, I also think he would still hate Hanzo just as much even if he’d never killed Genji, because Hanzo’s personality is that of a person you just naturally want to shove into a pool. Hanzo is a Dwight and Lucio is a Jim, and this equation will inevitably end with Hanzo’s belongings suspended in Jell-O at Lucio’s hands.