The East Asian Championship involves Japan, China, North Korea and South Korea, who won the competition two years ago.
Brazilian Zico has left out Japan's European-based contingent, including Hidetoshi Nakata and Shunsuke Nakamura.
Japan take on North Korea in a politically charged opener on July 31 before facing China on August 3 and fierce rivals South Korea four days later.
Japan line up Angola friendly
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Goalkeepers - Yoichi Doi (FC Tokyo), Yoshikatsu Kawaguchi (Iwata), Seigo Narazaki (Nagoya)
Defenders - Atsuhiro Miura (Kobe), Makoto Tanaka (Iwata), Takayuki Chano (Iwata), Tsuneyasu Miyamoto (Gamba Osaka), Alex (Urawa), Yuji Nakazawa (Yokohama), Keisuke Tsuboi (Urawa), Akira Kaji (FC Tokyo), Teruyuki Moniwa (FC Tokyo)
Midfielders - Takashi Fukunishi (Iwata), Mitsuo Ogasawara (Kashima), Masashi Motoyama (Kashima), Shinji Murai (Iwata), Yasuhito Endo (Gamba Osaka), Yuki Abe (Chiba), Yasuyuki Konno (FC Tokyo)
Forwards - Tatsuhiko Kubo (Yokohama), Keiji Tamada (Kashiwa), Masashi Oguro (Gamba Osaka), Tatsuya Tanaka (Urawa)
Bahrain through to playoff
Houghton: 'We can do it'