Right, pasing is perfect
The original novel is too short, with only 32 chapters in total. In fact, the manhwa adaptation drags the story out a little bit to make it longer by emphasizing secondary characters who were barely mentioned in the novel, taking existing scenes, subplots, or lore and broadening them to give the story more dept.
However, it isn't frustrating at all and the pacing remains great
I know, right? It feels like a long story, but the pacing is actually just right, and the story itself is surprisingly short. It makes you genuinely enjoy the journey. Both the author and the illustrator did an amazing job making us feel as though we're experiencing everything through the MC's eyes, whom constantly being reincarnated throughout different timelines
It was just 24 chapters but it felt like I had read 120. Perhaps I too, went through the mountain of time(delusional).