Riot Games has been tight-lipped about how its animated series Arcane connects to the wider League of Legends lore world. Thankfully, this has finally been put to bed in a confirming statement from Riot itself.
Executive producer League of Legends Riot Brightmoon said on X: “Arcane and Alliance are part of the same Runeterra classic. Not everything is completely consistent, and we will slowly address this over time.
Riot is currently working on Arcane’s second season, so no doubt that means there will be even more continuity between the show and the game’s lore in subsequent episodes. Likewise, there will no doubt be further steps taken in the game’s development to create a more coherent overall narrative.