But nuki doki — the heartbeat of removal — is different.

So next time your chest tightens without cause, ask: What is missing? The answer may be nothing. And nothing, it turns out, has a rhythm all its own. The heartbeat of the hollow. Still racing. Still here.

We know doki doki — that double beat of anticipation, the heart’s stutter before a first kiss, a stage debut, a confession. It’s the sound of presence: too much feeling, too close.

Imagine: You are waiting for a message that does not come. The phone screen stays dark. And yet your chest pounds. Not from what is there, but from what is not . That is nuki doki . A heart racing inside a vacuum.