For an epic intro Civil War menu I recommend my mod - The most Immersive main menu - Age of Oppression v1

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All started when Bjorn went back of his journey and decided to make a visit to his relatives at Whiterun... as he did, he discovered machinations of Imperials and Thalmores on his land...

https://www.nexusmods.com/skyrimspecialedition/mods/39594