Place it directly after the doubting question in an edit, then follow it with Oh My God Wow to sell the reveal, and put No No Wait Wait just before the question to build the disbelief.
이 사운드에 대해
This is a very short spoken reply, lasting about 1.3 seconds, in which a bright voice delivers the words “I just did!” with playful certainty. It feels cheeky and triumphant, like catching someone mid-doubt and answering before they finish. The line is credited to Kizuna AI.