Place it near the end of a growing-up montage, after the early clips and just before the final farewell image. Follow it with Hello Darkness My Old Friend for a closing moment, letting the two songs carry the ending together.
關於此聲音
This is a short sung vocal clip lasting about four seconds, built around the drawn-out line about time slipping through fingers. The stretched vowels give it a wistful, aching quality that feels tender and a little bittersweet, like watching a precious moment pass before you can hold it. It lands softly, with a gentle rise and fall that makes the feeling linger after it ends.