Minato Aqua debuted in 2018 as a member of Hololive’s second generation of Japanese virtual streamers. “OtsuAqua” became her personalized version of “otsukaresama,” a common Japanese expression used when finishing a stream or acknowledging someone’s effort. This variation circulated through livestream clips, compilations, and fan edits, where her distinctive delivery made it useful as a compact ending cue. The Doraemon-like impression gives this particular recording an extra comedic angle, helping it remain recognizable among Aqua fans and broader VTuber audiences.