Jung-Gon Hwang closed with a 6-under 66 on Sunday and he cruised to a 3-stroke win at the Casio World Open.
Hwang finished at 19-under-par 269. The 20-year-old won for the second time on the Japan Golf Tour.
Kunihiro Kamii carded a 4-under 68 to take second at minus-16. K.T. Kim managed a 2-under 70 and finished alongside Kenichi Kuboya (69) and Yoshinori Fujimoto (67) in third place at 14-under 274 at Kochi Kuroshio Country Club.
Ryo Ishikawa and S.K. Ho both had 68s on Sunday, and they shared sixth place with Yui Ueda (70) at minus-12.