I'm not entirely sure specifically what 'carol freezes fanfic' is about without more context. It could be a fan - made story where a character named Carol has something to do with freezing in a fictional scenario.
Sukuna does die in the manga. The way it happens is quite dramatic and ties in with many other elements of the story, adding depth and tension to the overall narrative.
No. Ryomen Sukuna is a fictional character from Japanese mythology and modern manga/anime. He doesn't have a basis in a true historical event or person.
Nope. Ryomen Sukuna has no basis in reality. It's a product of the creative minds of the writers and illustrators who designed a captivating fictional character for the enjoyment of the audience.
It could be a fanfic where Carol, the character, freezes. Maybe she's in a cold place or something has made her freeze, like a spell or a special power.
Well, in such fanfictions, a common theme is the struggle against nature. The cold is a powerful adversary, and Naruto has to use his ninja skills and willpower to overcome it. There could also be themes related to self - discovery. Facing the threat of freezing to death might make Naruto realize some things about himself, like his own mortality or how much he values his life and the lives of others. And sometimes, there could be a theme of sacrifice, where Naruto might put himself in even more danger to protect someone else in the freezing situation.