In 2008, Yuyoyuppe began to post videos on the video sharing service
Nico Nico Douga, with considerable success for his song "Hope", sung by
Hatsune Miku. He would later join the band My Eggplant Died Yesterday as a vocalist. On September 26, 2012, Yuyoyuppe released his debut album
Story of Hope, as his first release on the label Yamaha Music which he joined that year. On July 7, 2014, he released the album
Vocaloholic, and later that month, he left My Eggplant Died Yesterday to form a new band called Grilled Meat Youngmans. Yuyoyuppe has produced music for other artists, such as
Babymetal, for their debut album
Babymetal. He has since written music for the band, including the song "
Karate" from
Metal Resistance. Finding appeal in the band's music, he was approached by the band's manager
Kobametal to write a song, to which he obliged. Mamiya also performs as a DJ under the stage name DJ'Tekina//Something, having performed at the
Rock in Japan Festival and
Summer Sonic Festival. He is married to voice actress
Hibiku Yamamura, who announced their marriage on Twitter on November 3rd, 2023. == Musical style ==