Place this clip right after the bold claim in your edit, as the immediate answer to it, then follow it with the awkward moment sound to let the rejection sink in. For a bigger anime reaction, open with the anime ahh sound before the claim so the denial closes the sequence.
关于此声音
This short clip captures Deku from My Hero Academia giving a hesitant um before a firm nuh uh, his young voice wavering at first and then steadying into a clear refusal. It feels funny and relatable, like a polite friend digging in his heels after a silly suggestion, because the nervous start makes the stubborn ending land harder.