Question: Hayato Arakaki plays for a baseball team that competes in what Nippon Professional Baseball league?
Context: The Japan Championship Series (日本選手権シリーズ , Nippon Senshuken Shiriizu ) , or Japan Series (日本シリーズ , Nippon Shiriizu ) is the annual championship series in Nippon Professional Baseball, the top baseball league in Japan.  It is a seven-game series between the winning clubs of the league's two circuits, the Central League and the Pacific League.  The Series is the highest level of play in professional baseball in Japan.  It is usually played in October or November.  As in all of the best-of-seven series, the first team to win four games is the overall winner and is declared the Japan Series Champion (日本一 , Nippon Ichi , number one in Japan) each year.  The winner of the Japan Series also goes on to be the Japanese representative team in the annual Asia Series. Kensuke Tanaka (田中 賢介, born May 20, 1981) is a Japanese professional baseball left fielder who plays for the Hokkaido Nippon Ham Fighters of the Nippon Professional Baseball League.  He has played for the Hokkaido Nippon-Ham Fighters of Nippon Professional Baseball and the San Francisco Giants of Major League Baseball. The Yomiuri Giants are a professional baseball team based in Bunkyo, Tokyo, Japan.  The Giants are members of the Central League (CL) in Nippon Professional Baseball (NPB).  In baseball, the head coach of a team is called the manager, or more formally, the field manager.  The duties of the team manager include team strategy and leadership on and off the field.  The team has employed 11 different managers since the formation of a professional baseball league in Japan.  The current Giants manager is Tatsunori Hara. The Asia Series was an international club baseball competition, contested by the champions of all four of the professional leagues that are associated with the World Baseball Softball Confederation (WBSC) — Australian Baseball League (ABL), Chinese Professional Baseball League (CPBL), Korea Baseball Organization League (KBO League), and Nippon Professional Baseball (NPB) — along with the CEB European Champion Cup holder and the host city, to bring the number of teams up to six. Nagisa Arakaki (新垣 渚 , "Arakaki Nagisa" , born May 9, 1980 in Naha, Okinawa) is a former Japanese professional baseball player.  He is currently with the Tokyo Yakult Swallows in Japan's Nippon Professional Baseball.  Despite having one of the best fastballs and sliders of anyone in the league, Arakaki has battled control problems and injuries throughout his career.  In 2007, Arakaki set the NPB record for most wild pitches in a season with 21, breaking Kazuhisa Ishii's record. Hayato Arakaki (新垣 勇人 , Arakaki Hayato ) is a Japanese professional baseball player.  He was born on October 21, 1985.  He debuted in 2013 for the Hokkaido Nippon-Ham Fighters. The 2008 Asia Series was contested on November 13–16 by the champions of Nippon Professional Baseball's Japan Series, the Korea Baseball Organization's Korean Series, Chinese Professional Baseball League's Taiwan Series, and the championship of the China Baseball League of the People's Republic of China.  In 2008, it was the first time that the champion of the China Baseball League participates in instead of the all-star team China Stars.  The winning team will receive ¥50 million yen ($0.5 million), the second place team will receive ¥30 million yen, and the other teams will receive ¥10 million yen each.  All games were held in Tokyo Dome, Tokyo, Japan.  The Saitama Seibu Lions defeated the Uni-President 7-Eleven Lions in the title game to win the championship for Japan.  Outfielder Tomoaki Satoh was named the MVP of the series. The Chinese Taipei baseball team () is the national team of the Republic of China (ROC).  It is governed by the Chinese Taipei Baseball Association.  The team is ranked fourth in the world by the International Baseball Federation, behind the United States, Japan, and South Korea respectively.  They have consistently maintained top positions in international baseball competitions.  The team is usually made of professionals from Taiwan's Chinese Professional Baseball League, Japan's Nippon Professional Baseball, and Major League Baseball or Minor League Baseball from the United States. The Hokkaido Nippon-Ham Fighters (北海道日本ハムファイターズ , Hokkaidō Nippon-Hamu Faitāzu ) are a Japanese professional baseball team based in Sapporo, Hokkaidō.  They compete in the Pacific League of Nippon Professional Baseball, playing the majority of their home games at the Sapporo Dome.  The Fighters also host a select number of regional home games in cities across Hokkaidō, including Hakodate, Asahikawa, Kushiro, and Obihiro.  The team's name comes from its parent organization, Nippon Ham, a major Japanese food processing company. Lin En-yu, (; born March 25, 1981 in Tainan City, Taiwan, Republic of China), is a Taiwanese professional baseball pitcher.  After serving in Chinese Taipei's National Training Team in 2003 and 2004, he was drafted by the Macoto Cobras of the Chinese Professional Baseball League in Republic of China in early 2005 and stayed with the team until the end of 2006.  He later played for Tohoku Rakuten Golden Eagles of the Nippon Professional Baseball in Japan since 2007, under the introduction of former Cobras manager Kuo Tai-yuan and followed his teammate Lin Ying-Chieh.  Lin throws a variety of different pitches and has a fastball speed up to 151 km/h (94 mph), and has been a frequent member of the Chinese Taipei national baseball team since 2003.
Answer: Pacific League