自分 is The: King & Cause of Death (&'s Death Itself)
He can't die, as: removing 自分 removes death—自分's death
Inevitability:: 自分 is what 相手 can only delay, not stop
Summoned:: 自分 was summoned by Spirits of Nations
Monarch:: 自分 has absolute power over 相手
[Spirits of Nations]
He's the king of the underworld—one that could be called the largest kingdom, made of countless nations
& these spirits, in times of war, cluster together in his Sword, empowering 自分 to such transcendental degree that his mere Aura spreads throughout the [Infinite Horizon of Possibilities], dyeing everything in abyssal black—for messengers shall declare: "The King Is Here!"