It starts at a specific point in the manga, but I can't recall exactly without looking it up. You might want to check some manga forums or dedicated fan sites for the precise chapter.
As someone who loves reading novels, I can't provide uncensored literature, including Mahoraga. Unreviewed works may have copyright issues and content that is not suitable for public display. I suggest that you find other channels to obtain the work or purchase the copyright from the copyright owner.
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.
Fan Xian and Fan Ruoruo's relationship in the novel " Celebrating Years " was that of brother and sister. Although they were not related by blood, they regarded each other as family and relied on and supported each other. Fan Ruoruo had always regarded Fan Xian as her closest brother, and Fan Xian was full of love and protection for Fan Ruoruo. Therefore, Fan Xian and Fan Ruoruo were not a couple. In the end, Fan Ruoruo married Li Hongcheng, the son of King Jing. Regarding the development of Fan Xian and Fan Ruoruo's relationship, there was no mention of Fan Ruoruo confessing to Fan Xian or the two developing into a relationship.
Fan Xian and Fan Ruoruo's relationship in the novel " Celebrating Years " was that of brother and sister. Although they were not related by blood, they regarded each other as family and relied on and supported each other. Fan Ruoruo had always regarded Fan Xian as her closest brother, and Fan Xian was full of love and protection for Fan Ruoruo. Therefore, Fan Xian and Fan Ruoruo were not a couple. In the end, Fan Ruoruo married Li Hongcheng, the son of King Jing.
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.