Japanese Study Cafe?

そういや = come to think of it; oh right (casual contraction of そういえば)

今夜 (こんや) = tonight

お札 (おふだ) = talisman; seal; charm

剥がす (はがす) = to peel off; to remove

言ってた = 言っていた (contracted) — past of 言っている

More on ている vs. る: here.

言ってた vs. 言った — what's the difference?

Both are past tense. Both refer to something someone said earlier. But they frame that information differently.

言った treats the act of speaking as a completed past event — someone said something, that's it. It's neutral and factual, focused on the moment of utterance.

言ってた (言っていた) treats the content of what was said as still relevant and active — the information is being carried into the present moment. The speaker isn't just reporting a past event; they're saying "this thing that was said still matters right now."

In this scene, Itadori isn't quoting his friends for the sake of accuracy. He's flagging information that is relevant to what's happening tonight. The ている is what signals that — the content of those words has arrived here, into this conversation, and it matters.

言ってた → the information is still live; it applies now 言った → the act of saying happened; neutral report