It was Taniguchi's first victory in this event and he adds this title to his two Japan Open Championships making a significant treble of flagship Japan Golf Tour events.
Taniguchi started the final day tied with Tetsuji Hiratsuka but Hiratsuka took the early advantage when he went two ahead with a birdie at the third hole.
No sooner had Hiratsuka established a break then he lost it with a triple bogey at the 4th. When Taniguchi birdied that same hole a four shot swing had taken place and Taniguchi was ahead by two.
Hiratsuka birdied five of his next eight holes and moved one ahead with six to play. The more experienced Taniguchi responded with birdies at the 13th and 14th and although he bogeyed the 15th so too did Hiratsuka and the eventual winner had the break he needed.
Recent Tsuruya Open winner, Hiroyuki Fujita, finished alone in third position two shots behind the runner up.
The surprise of the week was the performance of Ryo Ishikawa who, two weeks after recording a final round of 58 to win the Crowns, missed the cut by three shots.
David Smail did best in what was overall a disappointing week for the Australasian contingent finishing in a share of 34th. Smail was the only Australasian to make the cut.
The Japan Golf Tour has a break of one week before the Diamond Cup event starting on May 27th.