One unique feature is the exploration of non - human perspectives. Since the protagonists are reincarnated as monsters, we get to see the world from their point of view, which is often very different from that of a human protagonist.
Survival is a very common theme. Since the protagonist is often reincarnated as a relatively weak monster at first, they have to find ways to survive in a world full of threats. For example, in 'So I'm a Spider, So What?', the spider has to constantly hunt for food and avoid being killed by other stronger creatures.
Another great 'monster reincarnation light novel' is 'Overlord'. The main character is transported into a game world as a powerful undead monster. He then begins his journey of ruling the new world with his underlings.
Another good one could be 'Overlord'. Although the main character is more of an undead overlord rather than a typical monster, it involves the concept of being reincarnated into a different form in a new world. The story focuses on his attempts to build his own empire in this new realm, with lots of interesting characters and power - plays.
Survival is a very common theme. Since the character is reincarnated as a monster, they often have to fight against other creatures or humans who see them as threats. For example, in 'So I'm a Spider, So What?', the spider has to constantly find food and avoid being killed.
Another one might be 'That Time I Got Reincarnated as a Slime'. Although the main character becomes a slime which is not a typical 'first monster' in the sense of being menacing, it still has to deal with the new life as a non - human entity. It's a great story of building a new world and relationships from the perspective of a reincarnated being.
The male protagonist was the reincarnation of the God of Light who created reincarnation. The novel was as follows:
Library of Heaven's Path.
The protagonist, Ye Fei, was the reincarnation of a God who was in charge of light. He worked in a mysterious organization called the Library of Heaven's Path. He was responsible for managing the various mysterious powers and knowledge in the library.
In the library, Ye Fei met a girl named Li Ruoxin. She was an ordinary college student, but she accidentally discovered some secrets in the library. As the story unfolded, Ye Fei and Li Ruoxin experienced many thrilling stories together, and at the same time, they discovered the secret hidden behind this world.
Ye Fei had created the World of Samsara in the midst of Samsara, and through the various powers and knowledge in the library, he had helped the world become a better place. In the world of reincarnation, Ye Fei met many different characters, including some evil characters and some mysterious existences. He constantly challenged his own abilities to protect this world at the cost of his own life.
Library of Heaven's Path was a novel filled with fantasy elements. The protagonist, Ye Fei, was the reincarnation of a God who was in charge of light. He created the World of Samsara and used the various powers and knowledge in the library to protect this world from evil forces.