I can only speak to the Webnovel version here, since I haven't touched the audio drama. The cast is pretty tight-knit for a cultivation story, which I liked. The protagonist, Luo Zheng, is your classic driven underdog, but his defining trait is a weirdly pragmatic ruthlessness—he’s not out for revenge or justice, he just wants to get stronger in the most efficient way possible, which makes some of his choices genuinely surprising. His main companion early on is Bai Xiaoling, a spirit beast who takes human form. Their dynamic is less master-pet and more like a deeply skeptical business partnership with occasional bickering. The main antagonist in the first major arc is Elder Su from the rival sect, but honestly, he feels more like an obstacle than a character. The real interesting one is Jiang Yuer, this aloof genius from Luo Zheng’s own sect. She’s technically a potential ally, but her motives are opaque and there’s this constant tension about whether she’ll help him or use him. The story doesn’t waste time on huge crowds; it’s laser-focused on Luo Zheng’s immediate circle and the people directly blocking his path.
I dropped it around chapter 300, so I’m not sure who shows up later, but those four—Luo Zheng, Bai Xiaoling, Jiang Yuer, and Elder Su—are the core that everything else revolves around in the beginning. The author seems to add characters only when Luo Zheng’s power level forces him into a new social tier, which keeps the cast from getting bloated.