'Advanced' lore of champions?

I've been hearing about narrative league of legends, or something like that. Say, I read on Ask Riot about the new stories incoming (?) I didn't even know there are any such as X , which immediately lead my thought to Syndra X Zed... But where!! can I read those??? ;-; I'm desperate to know the advanced lore of the champs or stories with them btw, Taric X Ezreal would be life <3