You could show his early days of training in more detail. The struggles he faced, the times he wanted to give up but didn't. This would give more depth to his character and his seemingly effortless power now.
One way is to explore his life before he became a hero. Maybe he had a normal job and was constantly frustrated with the mundanity of it. This could have been the catalyst for his intense training.
Another idea is to create a backstory involving his family. Maybe he had a mentor figure in his family who inspired him to be strong, or there was some event in his family history that led him to pursue such extreme power.
Chapter 462, "Decisions", is the clearest early answer because it turns Damien's situation into a concrete plot event. The chapter gives readers a real answer by opening on By the time Damien and Apnoch returned to the training yard, the sun... and ending on They'll listen to you before anyone else." Apnoch's gaze hardened.. In story terms, the chapter closes with For now, peace held.
Chapter 104, "Camp Strength, Rapid Enhancement (2-in-1 Large Chapter)", is the clearest early answer because it turns Xia Chuan's situation into a concrete plot event. It opens with Opening the camp system interface and seeing the data on Wood, Coal,... and closes on Wood, of course, is not a problem, but 5000 units of iron mean even.... The key payoff is that it turns Xia Chuan's growth into a concrete upgrade step and sets up the next payoff in the power growth storyline linked to Great Xia.
Chapter 99, "Life is Improving", is the clearest early answer because it turns Xia Hong's situation into a concrete plot event. The chapter turns that into something concrete by moving from Zou Yuankai's face wound was from last night; it was simply wrapped... to Until coal resources are ample, minor injuries will have to be....
Chapter 97, "Jin", is the clearest early answer because it turns Luo Yuan's situation into a concrete plot event. It opens with In a month, Xia Chuan increased from less than seven thousand to... and closes on When survival becomes a problem, safety isn't assured, and there's no.... The key payoff is that the chapter closes with Seeing Xia Hong approaching, Cheng Feng was slightly surprised.
Chapter 62, "Soul Capturing, Promoted to Intermediate", is the clearest early answer because it turns Li Hu's situation into a concrete plot event. The setup is At this moment, the valley ground was littered with the fragmented..., but the pressure keeps building through Dense white lines burst forth from the Wood Puppet Monster's body,....
Chapter 415, "An Inside Attack", is the clearest early answer because the buildup finally cashes out in a real clash. The setup is Apnoch shook his head, a wry smile tugging at his lips., but the pressure keeps building through You really aren't ordinary." "Never claimed I was." Damien smirked....
Chapter 425, "Clearing The Tunnel", is the clearest early answer because it turns Damien's situation into a concrete plot event. The setup is The silence stretched, filled only by Fenrir's growls and the wet..., but the pressure keeps building through Lyone stood rigid, trembling—not from fear of the beasts this time,....
Chapter 33, "Fighting Beasts", is the clearest early answer because the buildup finally cashes out in a real clash. A useful checkpoint is the way the scene starts with Yuan Cheng, Lin Kai, go extinguish the fire. and follows through with Realizing it couldn't break free from the ropes in their hands and....
Chapter 20, "Got It", is the clearest early answer because it turns Frost Wolf's situation into a concrete plot event. The chapter turns that into something concrete by moving from Having seen the Snow Mane feign death once before, Xia Hong naturally... to That torch could heal the Snow Mane and even make it stronger.. What makes it stick is that the chapter closes with "Got it!, which gives Frost Wolf a stronger narrative position and pushes the power growth onward.
Chapter 440, "Wrong Targets", is the clearest early answer because it turns Damien's situation into a concrete plot event. Early on, Damien landed like a meteor among the trees, the shockwave throwing.... By the end, I just… overdid it." The words tasted bitter in his mouth.. Inside the broader family politics storyline, the chapter closes with The hunter had found his trail., which gives the current arc a stronger narrative position and pushes the power growth onward.