Well, it could be due to a series of unexpected events and the way the characters reacted to them. Sometimes, small actions can lead to big consequences and that's how it might have reached this point.
As of my knowledge, it has a novel. The existence of the novel version of 'Critical Point' can be a great addition for the fans. The novel can offer different perspectives on the story. For example, it might explore certain character relationships in more detail. It could also have different pacing compared to the manhwa, which might be appealing to those who like to experience the story in a more text - heavy and in - depth way. It can also be a great resource for those who want to analyze the story more closely.
The raw Turning Point manhwa usually has more detail and an unpolished feel. It can give you a deeper look into the creator's original vision before any edits or refinements.