Put it just after the reveal in a short anime edit, then follow it with the Rizz Sound Effect to underline the flirt, or with the Baby Laughing Meme Sound Effect when the moment turns into shared laughter.
關於此聲音
This is an under-a-second, bright 'tehehe' giggle linked to Tamamo-no-Mae, a familiar figure in anime and game fandom, especially among Fate fans. It sounds playful and teasing, cute with a smug edge, like a knowing laugh after a cheeky move. That light, mischievous feeling makes it an instant wink in a meme edit.