Keina Suda

Keina Suda (須田景凪, Suda Keina; born 20 January 1993) is a Japanese musician and singer-songwriter. He currently belongs to A.S.A.B, a sublabel of Avex Inc. Before 2017 he made music using Vocaloid and other related software under the name Balloon (バルーン, stylized as balloon).