The 'the kingdoms of ruin novel' could potentially have a plot centered around different kingdoms vying for resources, territory, or some sort of magical power. There might be heroes and villains within these kingdoms, with complex relationships and motives. Maybe there are also prophecies or ancient secrets that play a role in the overall story.
Since I haven't read 'the kingdoms of ruin novel', I can't name the main characters. But they are likely to be people from different social strata within the kingdoms, such as a noble leader, a brave warrior, or a wise mage.
I don't think so. Reading the manga can enhance your understanding and appreciation of the anime. You might notice things you missed before or gain a deeper connection with the story and characters.
Poor character development can really ruin a novel. If the characters are one-dimensional or their actions don't make sense, it can turn readers off. Also, inconsistent writing style or grammar mistakes can detract from the reading experience.