The setting of this article: Zuo Sakura, slightly Itachi Sakura.
When Sasuke and Sakura were on a mission and on their honeymoon, they accidentally fell into a parallel world (ps. Similar to the real world). Sakura and Sasuke traveled to the 15-year-old Sakura and Sasuke in the parallel world. The two had just graduated from junior high school and were about to enter a tough high school. The time period probably lasted from the first year of high school to the graduation of high school. Because Sasuke has the blessing of the Samsara Eye, he retains memories, while Sakura only has the memory of Sakura in the parallel world, not the Naruto world. And the character of Sasuke in the parallel world is a bit like Charasuke.
Intention: Probably to fall in love in a different world