The 'Naruto Cataclysm Justu' in fanfiction often involves extremely powerful and destructive techniques. It can be a unique creation by fans to add more high - stakes action to the Naruto universe. For example, it might be a jutsu that can cause massive earthquakes and tsunamis, changing the entire battlefield.
Characters can be both physically and mentally affected. Physically, they might be injured or killed if caught in the blast of the Cataclysm Justu. Mentally, they could be traumatized by the destruction it causes.
One possible plot twist could be that Naruto's smoke jutsu actually hides a powerful secret technique. For example, instead of just being a simple smoke cover, it could be a way to teleport or to create clones that are undetectable within the smoke. Another twist might be that an enemy figures out a way to turn Naruto's smoke jutsu against him, perhaps by using the smoke to spread a harmful gas or illusion that affects Naruto when he uses the jutsu.
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.