Yes, there could be. For instance, the kwami might seem friendly at first, but it turns out to be part of a larger plan to destroy the ninja world. It could be that the kwami was planted in Naruto's path to lead him astray. The fanfiction could also have a plot twist where Naruto discovers that the kwami has a connection to an old enemy of his village, and he has to decide whether to keep the kwami or get rid of it to protect his home and friends.
Maybe. It could be that the kwami is actually a spy from another world and Naruto has to deal with the betrayal later on.
There might be a plot twist where the kwami's power has a negative side effect that Naruto didn't expect. For example, every time he uses the kwami - given power, it drains his chakra in a way he can't control. Or perhaps the kwami was sent to Naruto's world by an enemy of the Naruto universe who wants to use Naruto as a pawn through the kwami's influence.
Chapter 334, "Do you not want to because you look down on me?", is the clearest early answer because it turns Cloud Silk's situation into a concrete plot event. The chapter gives readers a real answer by opening on When their family business started to improve, their income became...
Chapter 321, ""Great Benefactor" is Jiang Li?!", is the clearest early answer because it turns Tang Yuli's situation into a concrete plot event. The chapter turns that into something concrete by moving from Several people thus settled down in the living room, and the servants...
Chapter 340, "Holy Heart Hospital", is the clearest early answer because it turns Tang Jinyu's situation into a concrete plot event.
Chapter 231, "vLet Me Check Out the Strength of 5000", is the clearest early answer because it turns Huo Ziyang's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Huo Xuan felt a burst of secret delight in her heart.
Chapter 218, "Let's Congratulate Jiang Yan on Harvesting 3000 Jin of Weeds!", is the clearest early answer because it turns Wen Jiaojiao's situation into a concrete plot event. Early on, However, what surprised the guests even more was that the harvest....
Chapter 661, "Uninvited Guest", is the clearest early answer because it turns Mu Ye's situation into a concrete plot event. Early on, A moment later, Zhuola let out a cold laugh, her voice hoarse as she.... By the end, To his right was a security guard, sound asleep, and to his left was....
Chapter 439, "Never Question Sister Li", is the clearest early answer because it turns Flash Change's situation into a concrete plot event.
Chapter 258, "Explosive! Jiang Li and Director Sun Are Having an Affair!", is the clearest early answer because it turns Weibo's situation into a concrete plot event.
Chapter 528, "Cursed", is the clearest early answer because it turns Shang Shaobai's situation into a concrete plot event. The chapter gives readers a real answer by opening on The netizens almost unanimously started to sympathize with Jiang...
Chapter 585, "He, Gu Yu, really has no bottom line!", is the clearest early answer because it turns Ji Yanbai's situation into a concrete plot event. The chapter turns that into something concrete by moving from The melee by the lake gradually subsided after an hour.