Tone Rion (兎眠りおん) is the name of a Japanese-language female Vocaloid3 developed by MoeJapan. She is noted for her cute, nasal voice. The name comes from the Kanji 兎(Usagi or Rabbit) and 眠(Nemuri or Sleep). She was first seen in silhouette during October 14, 2011 and was revealed in a poster on October 21. Later during the Vocanama event, more of her official art, her demo and her website has been revealed, along with her twitter. Her release date was the 16th of December in 2011. Read more on Last.fm