Asgardians had a peculiar ability: the longer they lived, the more of their power they could unleash.
In other words, the older an Asgardian was, the stronger they became.
Odin's strength was beyond question. Even in his youth, he had been Asgard's mightiest warrior, something even Hela had to admit.
As he aged, Odin grew stronger with each passing day.
This forced him to enter the Odinsleep to suppress his power and restore his body.
Asgardians were not immortal. Even their lifespans of several thousand years eventually came to an end.
Odin had lived long enough. His power was so great that even at the end of his life, as long as he had not died, Hela could not escape the seal he had left to keep her banished.
Odin was not merely a warrior. More than his physical strength, it was his magic that made him formidable.
After he had broken through Loki's spell once before, the magic placed on him had unraveled completely over time.
Odin was proud of his son's mastery of magic, yet he felt guilty that his own actions had bred such deep resentment in the boy.
Banished by his own child, Odin no longer wanted to return.
His life was nearing its end.
If he went back, how could he face Frigga?
Just as he had once relinquished dominion over the Nine Realms, Odin had also given up searching for a way to live forever.
It was too exhausting, too painful.
The Nursing Home had been demolished.
Odin lived alone on Earth.
This place he had regarded as the home of mortals.
He had found a fine place to spend his remaining days in Norway.
Every day, he admired the scenery and carried firewood.
He felt a natural affinity for Norway.
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