Put it at the very start of an entrance moment, then follow it with Kids Cheering to turn the arrival into a celebration, or use Discord Join just before it when a friend enters a call to complete the group greeting.
このサウンドについて
This is a very short, loud welcome clip built around the name Regulus, lasting just over a second and delivered at full volume. It hits fast and feels exaggerated, enthusiastic and a little startling, like a greeting far bigger than the moment needs, with the energy of someone determined to be heard the instant they arrive.