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The Demon King of Death, Thanatos, laughed within the Underworld while sitting over his gigantic throne. His eyes glancing at a blue orb that projected to him what the souls serving him saw…
"Hahahaha! Fight all you want; your people will die horribly!" He laughed mercilessly.
He glanced as Planta and her friends fought against the Bone Centipede desperately, fighting with the Undead, and the monster's many transformations endlessly…
Until the final showdown, where its last form, a Ghost Dragon, was finally and completely vanquished.
Yet he didn't felt any frustration or anger, he had already completed his goal way before that, and all of those battles were merely to distract them and make them suffer.
"Well done, Yggdrasil, excellently done, indeed!" Thanatos laughed. "However, you're too late. Your people will perish, and you won't be able to do a single thing about that… You'll feel my pain, you'll go through the same things I went to…"
Check "The Protagnist's Sister Is Actually the Strongest"!