Without having read the 'young again in another world light novel', it's hard to say for sure. However, in this type of light novel, there is often a central character who is thrust into the new world while being young again. There may also be supporting characters like wise old mentors, friendly locals who help the main character adapt, or antagonists who oppose the main character's goals in this new world.
Since I haven't had the chance to read this particular light novel, I can only speculate about the main characters. There could be a protagonist who was perhaps an older person in their original world but now is young again in a different world. They might be joined by other characters such as a group of fellow adventurers they meet in the new world. There could also be a love interest character, who plays an important role in the protagonist's journey, either as a source of motivation or as a partner in their adventures. Additionally, there may be a powerful villain character who stands in the way of the protagonist achieving their goals in this new world.
Chapter 248, "Mind Your Brother More, He's Being Unreasonable!", is the clearest early answer because it turns Zhao Lang's situation into a concrete plot event. The chapter gives readers a real answer by opening on Chixia Mountain in the early morning was still shrouded in a pale...
Chapter 338, "The Adulterer is Far on the Horizon, Yet Close Before the Eyes", 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 Tang Jinyu, dressed in a light apricot Cheongsam, sat indifferently...
Chapter 343, "Five Cycles of Bone Tempering, 1,000 Zong Bone Burning in the Visible Yang Realm (Part 2)", is the clearest early answer because Zong Bone Burning finally turns buildup into a real advancement. The chapter turns that into something concrete by moving from Next is the Small Ancestral Spirit Tablet, which not only adds a... to But to his utter surprise, by this time it was already too late!.
Chapter 184, "This is Cheating!!!", is the clearest early answer because it turns President Shang's situation into a concrete plot event. The setup is Jiang Li can finish the competition alone???, but the pressure keeps building through Then isn't the championship undoubtedly hers?.
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 Zhu Tong's situation into a concrete plot event. A useful checkpoint is the way the scene starts with If you defend or attack the stage successfully, you can earn one... and follows through with From their posture, it was easy to determine they were young, but the....
Chapter 229, "He's Actually Brother Liu, the Watermelon Seller?!", is the clearest early answer because it turns Madam Huo's situation into a concrete plot event. The chapter turns that into something concrete by moving from Huo Ziyang's face had already turned deathly pale.
Chapter 350, "Methods to Improve the Peak of Cold Resistance, Moao's 10th Town, Beishuo Yang Fa, Nightmare, Lu Yun of East Ridge", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. The chapter gives readers a real answer by opening on Hmph, the Nine Towns have had an agreement long ago: if a Xianyang... and ending on Evidently, the other party didn't believe his self-introduction just....
Chapter 89, "Brother He, how can you be so unreasonable too?!", is the clearest early answer because it turns Shu Yan's situation into a concrete plot event. The chapter turns that into something concrete by moving from Director Sun took a step back, "What's the rush?
Chapter 349, "Attempting to Cheat, East Ridge's Strength, Lu Yang's Tactics", is the clearest early answer because it turns East Ridge's situation into a concrete plot event. Early on, Upon hearing these words, Zhu Tong was finally certain that Lu Yang's.... By the end, What do you think?" Seeing their expressions of struggle, Lu Yang.... Inside the broader family politics storyline, the chapter closes with "I had noticed before;