[Authenticity guaranteed] Gutai Art, Sadaharu Horio The obvious (Jiro Yoshihara, Atsuko Tanaka, Kazuo Shiraga, Shozo Shimamoto, Sadamasa Motonaga, Michio Yoshihara, Yutaka Matsuda, Akiyuki Tsubouchi), Artwork, Painting, acrylic, Gash