The exploration of new worlds or areas is also common. As the pet evolves, it might unlock the ability to access new places. This can lead to adventures and discovery of new species or powers. And sometimes, there is a theme of mystery, like uncovering the secrets behind certain pet evolutions or the origin of the pet evolution system itself.
One common theme is the struggle for power. As the pet - like characters evolve, they often face challenges that require them to become stronger. For example, in many such novels, they have to fight against stronger enemies or survive in a harsh environment. Another theme is the discovery of new abilities. As they evolve, they unlock new skills or powers that help them in their journey. For instance, a character might gain the ability to fly after evolving to a certain stage.
One common theme is self - improvement. When a character is reborn, they often strive to better themselves, whether it's in terms of skills, knowledge or relationships. For example, they might use their second chance at life to learn new fighting techniques or study magic more intensively.
One common theme is the bond between the human and the dragon. It's about how they develop trust and friendship. For example, in some novels, the dragon starts off as a wild and powerful creature, but through the human's kindness, they become close companions.
Power - growth is also a key theme. This often involves not just physical strength but also mental and strategic evolution. In novels like 'The Rising of the Shield Hero', the protagonist has to grow in power and knowledge in a world that has been turned upside down. His evolution is not just about getting stronger physically but also about understanding the new rules of the world and using them to his advantage. This theme often ties in with the idea of adaptation to the new post - apocalyptic environment.
Survival is a common theme. Characters, whether they start as weak animals or are transformed into them, need to find ways to survive in a harsh world. Another theme is power acquisition. As they evolve, they gain new abilities and powers, which often lead to changes in their status and relationships.
Survival is another big theme. In these novels, monsters often have to fight for their survival in a harsh environment. They need to evolve to better adapt. In 'Re:Monster', the goblin has to constantly improve himself to survive in a world full of stronger creatures.
One common theme is the bond of friendship. L and his pet form a unique connection that is often explored.
One common theme is the struggle for power. Demons often start from a relatively weak state and strive to become more powerful through various means like battles, absorbing energy or making pacts. Another theme can be the exploration of good and evil. Some demon evolution novels question whether demons are inherently evil or if they can develop a sense of morality as they evolve. Also, the theme of survival in a hostile world is quite frequent. Demons have to face not only other powerful demons but also other races or forces that may want to destroy them.
A common theme is often the idea of purity and sacrifice. Holy maidens are usually depicted as pure - hearted, and they might sacrifice themselves for the greater good.
One common theme is the power dynamic. Usually, the vampire has a lot of power and the pet is in a more submissive position at first. For example, in many stories, the pet has to follow the vampire's rules.