Craft fiction might also be about the crafting of stories themselves. It could be meta - fictional in nature, where the characters are involved in creating or manipulating fictional narratives. It's like a writer character in a story who is exploring different ways to craft a story within the story.
The Jujutsu Kaisen manga is indeed ending. It's been a great run, but all good things must come to an end. The final chapters are bringing closure to the characters and story arcs.
The Jujutsu Kaisen manga has reached its conclusion. The story came to a close with a satisfying ending that wrapped up the plotlines and character developments.