Masami Shiratama (白玉 雅己, Shiratama Masami), better known by his stage name Tama or Shiratama (シラタマ) is a Japanese musician, lyricist and composer from Innoshima and a bass guitarist of Porno Graffitti in September 1999.
After leaving the band in June 2004, he released the album Great Pleasure in December 2005.
Great Pleasure (December 21, 2005)