Asuka Ohgame (大亀 あすか, Ohgame Asuka, December 18, 1987) is a Japanese voice actress and professional mahjong player from Hiroshima prefecture. She belongs to Sigma Seven. Asuka Ohgame (大亀 あすか, Ohgame Asuka, December 18, 1987) is a Japanese voice actress and professional mahjong player from Hiroshima prefecture. She belongs to Sigma Seven.