Place it right on the reveal in a short edit, then follow it with the Bruh sound as the reply, or let the Emotional Damage sound close the scene after the reveal has sunk in.
このサウンドについて
This is a short spoken outburst built around a sharp 'WTF', heard almost entirely through the right ear, which makes the reaction feel closer and more sudden than a centred clip. At just over a second long, it lands as a jolt of confused disbelief, perfect for a moment that makes no sense at all. The one-sided placement gives it a startling, in-your-head punch.