Caitlyn Reveal | New Champion - Legends of Runeterra - YouTube
How to get all of the Arcane League of Legends skins for Jayce, Vi, Caitlyn, and Jinx | Esports.gg
So it turns out Corina was the mysterious "C" from Caitlyn's biography from 4+ years ago and it was not Camille as many people thought before (who were interested in her lore). :
5 best support champions to pair with Caitlyn in League of Legends