Question: Yang Yun-ho has directed the 2004 South Korean film based on which Japanese book?

Context articles: The Attorney
A Moment to Remember
He Was Cool
Fighter in the Wind
Rainbow Eyes
Grand Prix (2010 film)
White Valentine
Shinsukki Blues
Yang Yun-ho
The President's Barber

The Attorney () is a 2013 South Korean courtroom drama film directed and co-written by Yang Woo-suk, in his directorial debut (Yang was previously a film producer and webtoon author).
 With 11,375,954 tickets sold and a revenue of ₩82.9 billion , "The Attorney" became the 8th best-selling Korean film of all time, and the second highest-grossing Korean film of 2013.
A Moment to Remember (; lit.
 "Eraser in My Head") is a 2004 South Korean film based on the 2001 Japanese television drama "Pure Soul".
 It stars Son Ye-jin and Jung Woo-sung and follows the theme of discovery in a relationship and the burdens of loss caused by Alzheimer's disease.
He Was Cool (; lit.
 "That Guy was Cool") is a 2004 South Korean film based on the same-titled 2001 Internet novel written by Guiyeoni.
 The film was released in South Korean cinemas on July 23, 2004 and was the 35th most attended film of the year with 800,000 admissions.
Fighter in the Wind (Korean: 바람의 파이터 ) is a 2004 South Korean film.
 It is based on the Japanese book "Karate Baka Ichidai" which is a fictionalized account of karate competitor Choi Yeung-Eui (최영의, 崔永宜) who went to Japan after World War II to become a fighter pilot but found a very different path instead.
 He changed his name to Masutatsu Oyama (大山倍達) and went across the country, defeating martial artists one after another.
 This film concentrates on the period when he is still young, and developing his famous karate style, Kyokushin.
 The film was the seventh highest grossing Korean film of 2004 with 2,346,446 admissions sold nationwide.
Rainbow Eyes () is a 2007 South Korean crime thriller film directed by Yang Yun-ho.
 The story follows a police inspector who discovers that his friend is now a serial killer.The movie was remade into a thailand thriller named 'Cheun'.
Grand Prix () is 2010 South Korean sports film directed by Yang Yun-ho.
 It stars Kim Tae-hee and Yang Dong-geun in lead roles as horse jockeys.
White Valentine () is a 1999 Korean romantic film directed by Yang Yun-ho.
 It stars Park Shin-yang with Jun Ji-hyun in her movie debut.
Shinsukki Blues is a 2004 South Korean film about a smarmy corporate lawyer who magically switches bodies with a pro bono defense attorney with the same name.
 It was the last Korean film released to theaters in 2004.
Yang Yun-ho (born November 11, 1966) is a South Korean film director and screenwriter.
 His feature film debut "Yuri" (1996) screened at the Critics' Week of the Cannes Film Festival.
 Among the films Yang has directed since are "Libera Me" (2000), "Fighter in the Wind" (2004, for which he received a Best Adapted Screenplay nomination at the 2005 Grand Bell Awards), "Holiday" (2006), "Rainbow Eyes" (2007), and "Grand Prix" (2010).
 He also co-directed the 2009 television series "Iris" and its film version, "Iris: The Movie".
The President's Barber () is a 2004 South Korean film directed by Im Chan-sang.
 It follows a barber, his wife, and their only son through four decades of tumultuous Korean history.
 Much as in "Forrest Gump", we see important moments in South Korean history through the eyes of the titular barber, who is drafted to be the official barber of President Park Chung-hee.
 The role of the barber is played by Song Kang-ho and Moon So-ri plays his wife.