Naruto might be initially confused. He's used to being the one chasing after recognition and friends, so having his sister be so obsessed with him would be a new experience. He could be a bit awkward around her at first.
He might also feel a great sense of responsibility. Since his sister is so focused on him, he would want to be a good role model. So he'd start taking his training and ninja duties even more seriously. He would try to teach her important ninja values like perseverance and loyalty. For instance, he could start including her in some of his training sessions, but also make sure she doesn't overdo it. He'd be constantly worried about her getting into trouble because of her obsession with him.
Eventually, Naruto would probably accept her obsession with love. He's a very kind - hearted person. He'd see that her obsession comes from a place of deep admiration and love for him. So he'd start involving her more in his life, sharing his dreams and fears with her. He might even start depending on her in some ways, like having her as a support system during tough times in his ninja career.
Chapter 328, "Unexplainable Unease, Jade Dew Stone, Li Xuanling's Panic (Part 2)", is the clearest early answer because it turns Cold Resistance Level's situation into a concrete plot event. The setup is Through the harvest after killing Wu Xiong and Li Xuantian, Xia Hong..., but the pressure keeps building through Cold Beasts also like Jade Dew..
Chapter 287, "Cloud Dragon Army's First Battle, Zhou Yuan's Bloody Struggle, Decisive Victory and Unexpected Windfall (Part 3)", is the clearest early answer because the buildup finally cashes out in a real clash. It opens with The problem is, they still can't make any counterattacks. and closes on The banner flapped wildly in the battlefield wind, and the Cloud Jiao....
Chapter 339, "The Changes in Li Hu and Yang Zhong, the Hou Family's Opportunity, and Advice (Part 2)", is the clearest early answer because it turns Basic Strength's situation into a concrete plot event. The setup is According to the balance of their Contribution Value, it is actually..., but the pressure keeps building through The key is that these two are not the type to sit and eat away their....
Chapter 348, "Zhu Ling in Dire Straits, Eight Camps Martial Contest, Betting Five Years—East Ridge Has Fallen!", is the clearest early answer because it turns Bai Bo's situation into a concrete plot event. Early on, If you defend or attack the stage successfully, you can earn one.... By the end, This only made Zhu Tong angrier..
Chapter 273, "Top 100 Revealed, Entering the Hall, Team Numbers as Team Names", is the clearest early answer because it pushes Great Xia into a new phase or setting. Early on, Before the martial arts competition, the record for the Great Xia to.... By the end, This kid indeed has some combat talent and didn't disgrace me!" Among....
Chapter 316, "Blood Jade Fox and Mischief, Xia City in Turmoil, Migration Begins", is the clearest early answer because it pushes Cold Beasts into a new phase or setting. It opens with The second silver ore vein is about the same depth as the first one,... and closes on Xia Hong had already seen them in the storage at the base, so he....
Chapter 333, "Silver Mine from the Heavens, Yu Yao and Yu Sheng, No Need for an Ox Knife to Kill a Chicken [10,000-Word Mega Chapter Continued]", is the clearest early answer because the violence around Xia Hong becomes final instead of hypothetical. A useful checkpoint is the way the scene starts with North Slope of the mountain wall, Xia Hong followed behind Chen Ying,... and follows through with Suppressing his inner exhilaration, Xia Hong scanned the valley, then....
Chapter 292, "White Dew Gu's Open Plot, Long Mountain's Advance", is the clearest early answer because Li Xuantiang finally turns buildup into a real advancement. The setup is The Holy Sun Pill?" On the top floor of the Wushuang Main Building,..., but the pressure keeps building through Below, Yuwen Dao continued, "It's called the Holy Sun Pill..
Chapter 291, "Infighting in Long Mountain, Li Tiancheng's Caution", is the clearest early answer because the buildup finally cashes out in a real clash. Early on, Longyou, Year 48, June 21 At Song Yuan's station, chaos erupted on.... By the end, Naturally, he couldn't bear to hear everyone slander his old friend,....
Chapter 325, "Mobilizing the Beehive, Where Is the Divine Arm Bow? Full Deployment", is the clearest early answer because it turns Xiao Kangcheng's situation into a concrete plot event. The chapter gives readers a real answer by opening on Second Year of Great Xia, December 29 As night fell, the underground... and ending on Of course, there's also the two tribes of Frost Wolf and Snow Mane,....