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Vikings is very good, in fact it was the best for me in the sense of narrating the entire life story of the characters. But... It's painful to watch some moments (in the sense of the series not doing what you want)

I heard the main character died at the end or so?

This could be a big spoiler so I won't say much about it, but if you're interested keep clicking on the replies

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The main character dies several seasons before the series ends but continues to influence the entire narrative after his death.