Common themes include the struggle with identity. Naruto is known as a strong ninja, but being terminally ill makes him question who he is now. There's also the theme of sacrifice. His friends might sacrifice a lot to try and save him. And the theme of acceptance. Naruto would need to accept his situation, and his friends would need to accept that they might lose him, which is a very difficult process.
One common theme is the power of friendship. Naruto's friends would try their best to support him. Another is the exploration of mortality. Naruto would have to face his own death, which is a big change from his usual fearless self. And there could be the theme of hope against all odds, as his friends search for a miracle cure.
Well, a frequent theme is the reaction of the community. The Hidden Leaf Village would be in shock. People would start to realize how important Naruto is to them. Also, there could be the theme of Naruto's unfulfilled dreams. He may have so many things he still wants to do. And the theme of legacy, as he thinks about what he'll leave behind.
Chapter 191, "Sister, Jiang Cheng is bullying me!", is the clearest early answer because it turns Jiang Ye's situation into a concrete plot event. A useful checkpoint is the way the scene starts with This change made Jiang Cheng extremely uncomfortable.
Chapter 342, "Founding Ceremony, Childhood Sweethearts, Did the Star-picking Hall Catch Fire?", is the clearest early answer because it turns Zhao Long's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Inside the shrine, there were a total of seven spiritual tablets, two... and follows through with Did the Holy Tripod explode?" "The Holy Tripod is further back, look,....
Chapter 208, "Those Who Commit Many Wrongs Will Destroy Themselves", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. The chapter gives readers a real answer by opening on Jiang Yan clicked his tongue, "What's this about money?
Chapter 5, "Catching Adultery Personally", is the clearest early answer because it turns Mystical Skill's situation into a concrete plot event. The chapter gives readers a real answer by opening on Actually, when Manager Fang saw Jiang Li, he was somewhat surprised.
Chapter 340, "Seclusion, Growing Yu Generation, Family Banquet, Rapid Development", is the clearest early answer because it turns Han Shuang's situation into a concrete plot event. The chapter turns that into something concrete by moving from But unexpectedly, at this very moment, the solemn and sacred... to The last time Nong Ying carried the Second Prince, she wasn't paying....
Chapter 78, "If you want to drink the soup made by my sister, wait for the next life!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event.
Chapter 335, "Songyang Ridge, Seven Houses Surrender, First Batch of Silver Arrives", is the clearest early answer because it pushes Great Xia into a new phase or setting. The chapter turns that into something concrete by moving from It seems you all came prepared today. to Lord Xu, our Great Xia's expansion and annexation outward is....
Chapter 330, "Longshan System Gathering, Simplified Sect System", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Just as everyone in Xia City was preparing to welcome the Cold... and follows through with The two sub-groups of the Redwood Ridge faction boast Cold Resistance....
Chapter 381, "You are Liu Suqing's Daughter", is the clearest early answer because it turns Daughter Yu Tiantian's situation into a concrete plot event. It opens with Yu Tiantian was even more baffled now. and closes on If I hadn't carelessly handed you to someone else, you wouldn't have....
Chapter 331, "Zhu Shun and Huang Tianxi, Cold Yuan Banquet of Great Xia Year 3, Xia Yuzong (6)", is the clearest early answer because it turns Cold Element Festival's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Xia Hong suddenly let out a hearty laugh and raised his glass to... and follows through with It's not only Xia Yuzong's birth; everyone could clearly feel that....