This was destiny.
Cobalion suddenly understood. Why had it inherited the Divine Steel Sword, while Keldeo had inherited the Sword of Resolve?
Because only the Sword of Resolve, with the resolve to transcend oneself, could destroy the Darkest Day Stone.
And likewise!
Only the Divine Steel Sword, capable of cutting through anything, could then destroy the White Day Stone!!
Only then could they strike together with Kyurem's will, from within and without, and utterly slay this incarnation controlled by instinct!!
"So this was the Divine Steel Sword's mission."
"So this was the moment I, Cobalion, had been waiting for!!"
"Kyurem, the pact the Swords of Justice made with you in ancient times has finally reached its conclusion!!"
Cobalion abruptly stepped forward. Nothing remained in its iron-gray gaze but that white eye, shining with endless light!
At that moment, Caitlin's gaze grew unfocused, and her head felt heavy for the first time in ages. She knew she was nearing her limit.
Yet aged words surfaced in her mind, one after another.
"Caitlin, do you know why the Divine Dragon split into three?"
"The Divine Dragon's left eye held ideals, and its right eye held truth. To all living beings in this world, ideals and truth are light—the light that illuminates their hearts."
"And the Divine Dragon shared its own 'light' with the entire world. In exchange, it fell into darkness filled with endless, bitter cold."
"Reshiram guides people to uncover truth, and loathes those who abandon it."
"Zekrom inspires people to pursue ideals, and likewise despises those who casually abandon them."
"And Kyurem—"
"—is the dragon destined to bring endless winter, because only suffering and despair can force people to keep moving toward the light!!"
"But Kyurem, the most wicked dragon, whom no one loves or reveres, needs no one's pity.