I don't think so. Why? 1. Without a sun humans wouldn't be able to live on..well, anywhere. The destruction of the sun would signal the end of destiny, as there would be no one to protect, so no story really. 2. Pretty sure that's going to be a flashback of sorts when introducing the villain. The purpose of it would be to show he holds lots of power and is capable of large scale destruction (in this case probably to give the thought that he could blow up earth if he wanted to).
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you need to read/watch this more thoroughly before commenting. I initially thought the same thing, but the evidence presented is straight obvious.
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^this
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I never actually suggested the sun be destroyed, just split in 2.