The Only Son Word Search Puzzle – Search Characters, Actors and Actresses. Word Search Puzzle Solver. A silk factory worker is persuaded to support her son's education up to a college level despite their poverty. Many years later she travels to Tokyo to visit her son. Find out the following actor, actress, character names, and other movie-related words hidden in this word search puzzle based on this movie.. This includes identifying and searching for words that are related to : Tomio Aoki, Choko Iida, Chishu Ryu, Bakudan Kozo, Kazuo Kojima, Seiichi Katô, Masao Hayama, Kiyoshi Seino, Tomoko Naniwa, Eiko Takamatsu, Shinichi Himori, Yoshiko Tsubouchi, Mitsuko Yoshikawa .