Jhin Login Screen?

I'm still wondering as how Sona, Vi, Zed, and Garen relate to Jhin as the lore hardly said anything at all. I was looking at the screen and spotted smoke with butterflies coming out of it. Is it possible that the login screen showed him "killing" Sona? I mean, in the trailer, there was a gunshot and a scene of Sona with smoke coming out of her throat with butterflies. It couldn't be the smoke from his gun because his gun is nowhere near it. Also, where the mirror shatters, it looks like a body with petals sprawled over it? I can't really make out the shape...or maybe it's a statue? I dunno, maybe I'm overthinking it. [zombie-brand-mindblown]