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.
The shooting locations of the second season of the celebration included Yunnan Stone Forest Scenic Area, Tianjin Binhai Library, Guizhou Qinhan Film and Television City, Zhejiang Xiangshan Film and Television City, Xiangyang Tangcheng and other places. The shooting scenes included indoors, outdoors, streets, etc. Each scene was carefully designed to restore the ancient atmosphere. The actors performed well on the spot.
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.
In the manga, Sukuna doesn't possess all 20 fingers. There are specific story arcs and events where his finger count changes based on the plot developments.
In the manga, Sukuna does acquire all his fingers over the course of the story. This is a significant plot development that has major implications for the storyline and character dynamics.