Flumpool is a Japanese rock band of four from Osaka. The name is a compound word of f from the English word four since there are 4 members along with the word meaning mass lump and the word pool. Flumpool falls under the label of ASketch. Yamamura has been writing the lyrics for almost all of their songs and Sakai has been doing the composing. Members: Ryuta Yamamura vocals guitar Kazuki Sakai guitar Genki Amakawa bass Seiji Ogura drums Source: MAL