system
Given the following post, respond as if you're commenting on Reddit:
human
[Game of Thrones] How does Cersei's claim to the throne work, succession wise?

I get that she basically just took it by force after Tommen's suicide, but what's the legal justification? Officially it should go to the Baratheon heir, right? And since the Iron Throne is patrilineal, if we assume Lannister ownership shouldn't the heir then be Tyrion? But he's a kinslayer by this point, so then it's Jamie? How does Cersei swing this other than threatening to re-enact the Mad King's rampage?
gpt
She really has no legal claim, holding it entirely by force.

The simple fact that she’s the person sitting on the throne gives her a veneer of legitimacy, but that’s all.

Oddly, the people of King’s Landing - who have in the past risen up in violent riots, and threw shit at her in the streets - seem to be okay with this, despite the fact that she got there by murdering the beloved High Sparrow and Margaery Tyrell, along with hundreds of others.