Haruna Masaki, also known as Klaha, is a Japanese singer, songwriter and pianist. He started his career by helping to form the band Pride of Mind in 1992. After recording one album, the band disbanded in 1996. Masaki then resurfaced in the hugely popular MALICE MIZER as Klaha in 1999 as lead singer. He stayed in MALICE MIZER until they disbanded in 2001 and after leaving, persued a solo career. He has since released one album (Nostal Lab), a mini-album (Setsubou), and a maxi-single (Märchen), which were all accompanied by follow-up tours.