A Case For Why Riven DID NOT Kill Yasuo's Elder
Don't even know if this is still relevant, but my friends and I had a little discussion about this.
Riot is sort-of implying that Riven killed Yasuo's elder, through his interactions through quotes in game. However, this just makes no sense.
Lore-wise, Riven is was a normal soldier. She fought on the front lines. It makes NO SENSE that she would be assassinating some village elder.
Secondly, the Noxians weren't doing much fighting anyways, they were following Zaun's machines. It was cleanup, not assassination, that Riven participated in.