He might isolate himself. Naruto has always been a social person, but the heartbreak could be so intense that he just wants to be alone. He might go to his favorite training spot and just train by himself for days, trying to forget the pain through physical exertion.
Naruto could also try to find distractions. He might take on more dangerous missions or get involved in village politics more than he usually would. By keeping himself busy, he hopes to not think about Hinata and the heartbreak she has caused him. In some fanfictions, he even leaves the village for a while to explore the world and get away from the memories associated with her.
Sometimes, he might seek support from his friends. Although it's a heartbreak caused by Hinata, Naruto has a strong group of friends like Shikamaru or Sakura. They might offer him advice or just be there to listen. But it could be a struggle for Naruto to open up, as he is used to being the strong one. However, eventually, with their help, he might start to heal slowly.
Chapter 436, "The Gate Hidden In The Forest", is the clearest early answer because it turns Damien's situation into a concrete plot event. A useful checkpoint is the way the scene starts with The light over the Verdant Verge dimmed as evening crept in, the... and follows through with We'll be ready." And with that, the wyvern's shadow rose around him,....
Chapter 8, "Breaking Through the Logging Realm", is the clearest early answer because Yuan Hong finally turns buildup into a real advancement. Early on, By the campfire, everyone at the Great Xia Camp was either lying down.... By the end, There were twelve stakes in total, five of one hundred pounds, two of....
Chapter 147, "Total Kill, Confrontation Cold Resistance Level [Killing Spree Chapter, Seeking Monthly Tickets]", is the clearest early answer because the violence around Xia Hong becomes final instead of hypothetical. The setup is Logging Realm, Earth-digging Realm, and even the Cold Resistance..., but the pressure keeps building through Since that's the case, numerical advantage naturally exists..
Chapter 152, "Mirror Immortal's Killing Intent, Who Has Fallen?", is the clearest early answer because the violence around Yi Blade becomes final instead of hypothetical. It opens with After saying this, Xia Chuan turned to look at Xia Hong and... and closes on In all directions, centered around the group of seventeen, at a.... The key payoff is that the danger stops being abstract and the conflict around Yi Blade becomes immediate, forcing the surrounding cast to react under pressure.
Chapter 167, "Snatching the Mirror, He Yuanhun's Confidence", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. It opens with How about you surrender now and come back with me to the Great Xia... and closes on The mirror, upon contact with his eye, automatically shrank and then....
Chapter 68, "Coal and Iron Mines", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. Early on, Over two hundred people began working together, and the once ravaged.... By the end, In the makeshift wooden house, without any proper arrangement,....
Chapter 4, ", Golden Finger Arrives [Please Favourite and Follow!]", is the clearest early answer because it pushes Xia Ding into a new phase or setting. It opens with Xia Hong gave Xia Chuan a glance and quietly handed him a hand axe. and closes on That Xia Ding was running in the opposite direction of your camp....
Chapter 39, "Three strikes and you're out.", is the clearest early answer because it turns Wood Puppet Monster's situation into a concrete plot event. The chapter gives readers a real answer by opening on Having been the leader of Rogel Camp for fifteen years, Luo Ming... and ending on That day on Great Xia Territory, Da Shi Camp had only five survivors..
Chapter 153, "The Terrible Color of the Dense Forest, The Shadow of Mirror Immortal Gu", is the clearest early answer because it turns Yi Blade's situation into a concrete plot event. It opens with Possessing over ten thousand population, and hundreds in the... and closes on Xia Hong slightly turned his body, using his back to receive the....
Chapter 124, "The Arrogant Mirror Immortal Camp", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. It opens with Fifteen people walked out of the bamboo forest. and closes on Xia Hong raised a hand to stop Xia Chuan from speaking further, his....