The 4th Shigeru Kawai International Piano Competition

Cedyna Financial Corporation

Gakken Holdings Co., Ltd.

harcob Co.,Ltd.

KDDI CORPORATION

Little Pianist Co., Ltd.

MUFG Bank, Ltd.

NOMURA SECURITIES CO., LTD.

Onward Trading Co., Ltd.

Sumitomo Mitsui Banking Corporation

Sumitomo Mitsui Trust Bank, Limited

TAISEI CORPORATION

AMANO KAISOTEN, Ltd.

AOKI TRANS CORPORATION

Chubu Electric Power Co.,Inc.

H & S Ltd.

ISEWAN TERMINAL SERVICE CO., LTD.

KYOEI FIRE AND MARINE INSURANCE Co., Ltd

SECOM CO.,LTD.

SHIZUOKA BANK,LTD.

Shizuoka Sanso Co., Ltd

Suzuyo & Co.,Ltd.