Put it at the turning point of an edit, just before the final confrontation, then follow it with Emotional Damage Meme Sound for the fallout and finish with Goku Drip Meme when the transformed character steps forward.
About this sound
This is the two-word 'I'm you' line from Jujutsu Kaisen, spoken in a calm, intense voice over about nine seconds. It feels cold, confrontational and strangely personal, as if a rival is holding up a mirror to the hero. The line comes from the anime series, where its quiet delivery makes a simple claim of identity land like a threat.