The reason could be that they are trying to escape from something, or perhaps they saw someone else do it and wanted to give it a go. Maybe it's a challenge they set for themselves to overcome their fears or prove their abilities.
Maybe they want to have some fun or show off their skills.
Chapter 370, "Elias's Encounter", is the clearest early answer because it turns Elias's situation into a concrete plot event. Early on, Only a presence that glowed behind the eyes, soft and colorless—like.... By the end, The third, a metal cube vibrating at an almost invisible frequency,....
Chapter 395, "Dealing With The Aftermath", is the clearest early answer because it turns Dean Oryll's situation into a concrete plot event. It opens with In the aftermath of rampage and fire, only the echoes remained. and closes on A wisp of shadow trailing behind their steps, unnoticed.. The key payoff is that the chapter closes with "Leave the barrier to me." Lord Terrace responded from his end., which gives Dean Oryll a stronger narrative position and pushes the power growth onward.
Chapter 38, "Revised: Chapter 38 Please Forgive Us for Not Accompanying You", is the clearest early answer because it turns Cold Beasts's situation into a concrete plot event. It opens with On the snowy night, the dense white trees pieced together the outline... and closes on Wang Rui, Sun Xinzhu, what's going on, why are you attacking Shi....
Chapter 83, "Creating an Echo Chamber", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. The setup is After several disasters, coupled with the recent encounter with the..., but the pressure keeps building through Xia Hong gained a deeper understanding and reflection on the plight....
Chapter 36, "Solidified Fire Oil [Seeking Follow-up Reads!]", is the clearest early answer because it turns Wang Ping's situation into a concrete plot event. The setup is No one thought Xia Hong would get injured, because the one who..., but the pressure keeps building through Even if that middle-aged man was very close, it couldn't change the....
Chapter 29, "New Rules", is the clearest early answer because it turns Cold Beast Meat's situation into a concrete plot event. It opens with Xia Hong was never someone who would easily compromise. and closes on But he didn't, and instead chose to present facts to Xia Chuan and....
Chapter 413, "They Usually Do", is the clearest early answer because it turns Damien's situation into a concrete plot event. The chapter turns that into something concrete by moving from Well, I guess that's all." Damien turned to Arielle and she responded... to One by one, they collapsed into heaps of lifeless rubble.. What makes it stick is that the chapter closes with Damien sensed this and grinned. He actually wanted them to know.
Chapter 535, "Open Attack I", is the clearest early answer because the buildup finally cashes out in a real clash. The setup is Far beyond the reach of the Forest of Twin Disasters… Beyond the..., but the pressure keeps building through And for the first time… It moved in the open..
Chapter 426, "To The Heart", is the clearest early answer because it turns Damien's situation into a concrete plot event. The setup is The tunnels were quieter now, though the air was thick with the..., but the pressure keeps building through Damien's stride never faltered, his hand resting casually at his side....
Chapter 499, "Beating Into Submission", 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 forest no longer resembled a forest. and follows through with And for the first time since the fight began, the demon looked afraid..