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.
It's hard to say for sure. Both Sukuna and Gojo are incredibly powerful, and it could depend on various factors like their current state and the circumstances of the fight.
The following are the recommendations of a few anime master apprentice novels: " Raising a Disciple to Cultivate ": This was a classical Xianxia novel, which told the story of a master and his cute disciple on the path of cultivation. 2. [My Apprentice Is Very Arrogant]: This novel tells the story of an evil master and his arrogant apprentice. These novels all have plots about anime masters and apprentices, which can meet your needs.
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.