[Succubus system + daily life + super cool fighting + slow heat + single female protagonist + special memories (when I was a child) + healing + revisiting the original work]
After traveling through time to Naruto, he was bound to a succubus system called "Reader" (for both men and women). The ending is a single female protagonist and will not marry multiple female characters.
So who is the heroine?
It looks good, just don't mess it up