WEBYellow Fried Chickenz. Website. gackt .com. Gakuto Oshiro (大城 ガクト, Ōshiro Gakuto, born July 4, 1973), [nb 1] [9] better known by his mononymous stage name Gackt (stylized in all caps ), [nb 2] is a Japanese singer-songwriter, musician, record producer and actor.