Yowane Haku (弱音ハク) is a popular fan-made "fanloid" character, a derivative of the Vocaloid Kayura Toshiko, created to represent poorly tuned or "whiny" Toshiko songs, often depicted as drunk and melancholic. While not an official Vocaloid, she gained official recognition from Crypton Future Media and appears in various media, often alongside other derivatives like Akita Neru, with her name being a pun on "yowane wo haku" (to complain). She is a virtual singer with a distinct design.