balloon (バルーン) is a producer who mainly uses GUMI, Hatsune Miku and flower. His songs featuring flower have gained a sizable reputation, some of which have exceeded over 1 million views.
His most popular work, Charles, has gained over 2 million views on Niconico. Recently, he often does collabs with Avogado6 to produce illustrations for his songs.
Apart from composing VOCALOID songs, he is also known for making self-covers of his own songs, which even exceeded the views on the original VOCALOID upload. Those covers were released in his VOCALOID album.
Around October 2017, he also started activity as a singer-songwriter under the name of "Keina Suda" (須田景凪).
His birthday is on January 20th. He is currently living in Kanto.