After Becoming the Heart Demon of the Protagonist

【Extra updates ongoing, it's recommended to open the author's notes for occasional skits, notifications, etc., for a better experience~】 Xiao Mo unexpectedly transmigrated into a book and became the protagonist's inner demon. The system enthusiastically introduced: “You need to accompany Chu Jinglan in his growth, and then be killed by him at the right moment to complete your task. After that, you can gain a chance for rebirth and survive in the cultivation world with a new identity. Isn’t that a great deal!” Who would have thought that after hearing this, Xiao Mo closed his eyes and lay flat: “Read and acknowledged, not doing it. He can die if he wants.” System: ??? Where d...