Star center Maki Takada kept hitting jumpers and the Denso Iris were giving the undisputed best women's team in Japan a challenge early in their contest.
But the Sunflowers responded, making wise adjustments both offensively and defensively, and finished the game in their usual dominating fashion.
Jx-Eneos trailed the Iris 16-15 at the end of the first quarter, but regrouped in the second and went on to rout their opponents 84-62 in the women's final of the All-Japan Championship at Saitama Super Arena on Sunday.