Akita Neru is an officially recognized derivative. The term "Derivative" is used here to describe a fanmade VOCALOID character that is based on an already existing character. Her catchphrase is "gocha gocha urusee!" Which means "Stop nagging me!" Easily forgotten and mostly known by her collaborations in Triple Baka with Hatsune Miku and Kasane Teto, as well as known for only one song of hers, "Stop Nagging Me!" There's a running gag calling Neru "Yellow Miku." Neru WILL cry about it.