Straightener is a four piece Japanese rock band, formed in 1998 in Tokyo, Japan, and have released 7 full-length albums to date, the most recent being 2006's Dear Deadman. They are good friends with fellow J-rock bands Asian Kung-Fu Generation and Ellegarden; as such, they make an appearance at Asian Kung-Fu Generation's annual Nano-Mugen Music Festival alongside the two bands.
* Also plays guitar and sings for the band FULLARMOR
* Also plays drums in the J-rock band, The Predators, with Sawao Yamanaka [Guitar, the pillows], and Jiro [Bass, GLAY]
* Former bass player for the J-rock band, ART-SCHOOL
* Also plays bass for the bands FULLARMOR, ZAZEN BOYS and Nothing's Carved In Stone.
*Joined Straightener October 1, 2008. Former guitarist for the band ART-SCHOOL.