Yokoso is a common Japanese word for welcome, and clips built around it circulate widely in anime and meme editing communities as a polite, cheerful greeting. The Waguri Yokoso version is shared as a short standalone sound, making it easy to drop into edits without needing the full scene around it. Its popularity comes from that simplicity: a single welcoming phrase can set a friendly tone, introduce a person or character, and signal a new segment. As a result, it keeps appearing in fan edits, streams and short-form videos.