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.
Chooki and Toxsa's dynamic in fanfiction can be really interesting. They could be depicted as a great team, with Chooki's bravery and Toxsa's intelligence complementing each other. For instance, in a battle, Chooki might charge forward fearlessly while Toxsa figures out the enemy's weak points from the side.
A fanfiction about Chooki and Toxsa could also be a coming - of - age story. They start off as young, inexperienced Tenkai Knights. As they grow, their relationship evolves. They might have a falling out over a misunderstanding, like a difference in opinion on how to handle a certain mission. But through this, they learn to communicate better and ultimately become even closer friends.
The scene of Sukuna's death in the manga is a climactic moment. It's filled with action and drama, as various powers and tactics are employed to bring him down. The build-up to this point is full of tension.