Overnight leader Yuta Ikeda narrowly escaped Satoshi Kodaira to win the Japan Open title on Sunday.
Ikeda had two bogeys and a double bogey while carding two birdies for a 2-over 72 on the final day to finish at 10-under 270 at Chiba Country Club in Noda, Chiba Prefecture. Kodaira had a 4-under 66, but ended one stroke behind Ikeda.
Shingo Katayama shared second place.
The victory was Ikeda's first Japan tour win this season and 12th overall.
It was his second major victory since he captured the Japan PGA Championship in 2009. The 28-year-old bagged ¥40 million in prize money.
In women's action, South Korea's Ahn Sun Ju triumphed at the Fujitsu Ladies after a three-way playoff.
The 27-year-old had an even-par 72 on the final day to finish at 11-under 205, allowing Sakura Yokomine and Erika Kikuchi to catch up. However, Ahn, who had already won four tournaments this season, including last week's Stanley Ladies, beat the two in the first hole of the playoff.