What's the relationship between Ryomen Sukuna and the manga?

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.

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.

Sukuna is a significant character in the manga, often driving the plot and creating exciting developments.

They have a complex and often adversarial relationship. Sukuna is a powerful and malevolent entity, while Megumi is a determined and evolving character.

They have a complex and adversarial relationship. Gojo is one of the strongest sorcerers trying to stop Sukuna's evil plans.

It could be other elements from Japanese folklore. There are many supernatural beings and concepts in Japanese mythology that might have influenced his creation.

I'm not sure exactly. Maybe Sukuna is a character in the yn manga or has some sort of connection, but I need more details to say for sure.

The connection between Gojo and Sukuna in the manga is one of opposition. Gojo aims to stop Sukuna's evil deeds, and their clashes drive much of the story's action and drama.

Sukuna and Megumi have a complex and often adversarial relationship. Sukuna is a powerful and malevolent entity, while Megumi is a shikigami user trying to deal with Sukuna's influence.

They have a complex and often adversarial relationship. Sukuna is a powerful and malevolent entity, while Megumi is a character who often has to deal with Sukuna's influence and power.