released a Vocaloid 4 update to V Flower called 'V4 Flower'. A physical release was later confirmed to be for July 16, 2014. The download version of the original software developed for the Vocaloid 3 engine was released on May 9 and for physical release in the summer of 2014. She debuted in HoneyWorks' song 'Inokori Sensei,' which was uploaded on April 17, 2014.

V Flower is an androgynous female Japanese vocal with a powerful voice designed to specialize in rock music. The song Goodbye Declaration, composed by Chinozo featuring V Flower became the most viewed VOCALOID song in history, and the most viewed song with lead vocals sung by a voice synthesizer in history, having surpassed 100 million views on YouTube in July 2021. The mascot character attached to the product is known as Flower ( フラワ). V Flower ( ブイフラワ), stylized as v flower is a Vocaloid voice library produced by Gynoid Co., Ltd.