I am just an NPC ,but I rewrite the story Novel

After dying in their own world, the protagonist awakens within another's narrative, not as a central figure but as an NPC, a mere background observer. Initially believing themselves powerless, they discover an ability to subtly influence events through leaving notes, whispering hints, and moving objects. These seemingly minor interventions create ripples, altering outcomes, saving lives, and shaping the destinies of heroes, heroines, and villains alike. However, the story itself is sentient and actively resists manipulation; pushing too hard triggers accidents, plot twists, and impending disasters. Consequently, the protagonist adopts a cautious approach, studying the narrative and quietly manipulating events from the shadows. By carefully guiding the characters without direct confrontation or cheating, they aim to survive and ultimately rewrite the story, proving that an unnoticed NPC can become the hidden architect of change.