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.
Yagami was the protagonist of the Japanese suspense manga Death Note. He was the son of the police chief, Night God Soichiro, and came from a wealthy family. In the manga, Yagami was portrayed as a perfectionist with a beautiful appearance, all-rounded sports, excellent acting skills, and strong psychological quality. He had superior intelligence and malice, and was considered a perverted criminal. Night God Moon's abilities included an excellent mind and a stable mind. He could design a plan to drive a wedge between the police and the enemy, and he could remain calm while processing a large amount of information. He pursued a new world without crime, believing that the world was decaying. Night Goddess Moon's personality and fate were deeply explored in the Death Note. He was a well-loved character because he represented the possibility of indulgence, but he also experienced many failures.
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.
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.