You need to understand the characters well. Naruto's traits like his determination and love for his friends should still be there even when he is Naruko. You can also add some new elements based on the change. For example, how Naruko (Naruto) deals with the different expectations of female ninjas in the village. And don't forget to create interesting conflicts, like maybe some of the other ninjas are suspicious of Naruko's sudden change in behavior.
First, think about the concept. Decide how Naruto becomes Naruko. Is it a magic spell? A body - swap? Then, plan the plot around this change. Maybe Naruko (really Naruto) has to enter a female - only ninja tournament and prove herself.
Start with a strong opening that grabs the reader's attention. For example, you could start with Naruto waking up and realizing he is in Naruko's body. Then, develop the story gradually. As you write, keep in mind the Naruto universe's rules and lore. Include some of the classic Naruto elements like jutsus and rivalries. Also, make sure to give Naruko (Naruto) a clear goal, whether it's to protect the village in a new way or to figure out how to change back to his original self.
Chapter 705, "Is She Her Own Destined Noble Person?!", is the clearest early answer because it turns Miss Jiang's situation into a concrete plot event. Early on, He Wen was made to laugh by Bai Lu.. By the end, Outside the building, Zhao Lang gazed thoughtfully at the car parked....
Chapter 219, "Five Thousand Jin??!!", is the clearest early answer because it turns Shang Shaojing's situation into a concrete plot event. The chapter gives readers a real answer by opening on Qi Tianyu was somewhat freaking out.
Chapter 250, "This Jiang Li is Definitely Doing it On Purpose!!!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. A useful checkpoint is the way the scene starts with The knowledge that several guests were soon returning had fans...
Chapter 194, "Come and Exercise with Little Shang", is the clearest early answer because it turns Wen Jiaojiao's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Director Sun, this isn't another one of your production team's wicked...
Chapter 294, "President, This Kid Says He Is Shiguang", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. Early on, Speak of the devil, and he shall appear.. By the end, You, have you come of age yet?.
Chapter 327, "Official Announcement Entering the Circle!", is the clearest early answer because it pushes Jiang Li into a new phase or setting. Early on, Three hours later, the shoot was over, and Shen Lan personally picked....
Chapter 524, "He Faces Imprisonment", is the clearest early answer because it turns Yu Li's situation into a concrete plot event.
Chapter 329, "This Role is Tailor-Made for Her!", is the clearest early answer because it turns Su Yinwan's situation into a concrete plot event. Early on, Looking further down, it was all about Jiang Li trending again.. By the end, Inside, there was a lengthy passage written expansively;
Chapter 173, "Su Yinwan, You Did It on Purpose, Right?", is the clearest early answer because it turns Su Yinwan's situation into a concrete plot event. The setup is Jiang Li finally rose from her seat., but the pressure keeps building through Seeing her stand up, He Yun also stood up..
Chapter 249, "Maxing Out Wilderness Survival Skills!", is the clearest early answer because the violence around Survival Skills becomes final instead of hypothetical. The chapter turns that into something concrete by moving from Jiang Yan's body subconsciously shivered twice.