I'm not sure if there are a lot of light novels specifically named 'Monster Parasite' in a very literal sense. However, there are some works in the horror - fantasy genre that might be related. For example, some light novels with themes of symbiotic relationships between strange creatures and humans might fall into this category. You could look into works by certain Japanese light novel authors who are known for their unique and often dark takes on such concepts.
One popular 'Monster Parasite' light novel could be 'Parasyte - The Maxim'. It tells a thrilling story about a young man whose body is invaded by a parasite. The relationship between the human and the parasite within him creates a complex and engaging plot filled with action, self - discovery, and moral dilemmas.
Typically, the unique feature is the exploration of the relationship between the monster and the host. In many cases, it's not just a simple parasitic takeover. There can be a psychological and emotional struggle within the host as they coexist or fight against the parasite. For example, in some stories, the host might start to develop new abilities because of the parasite, which adds an interesting power - dynamic aspect.
There are quite a few. 'Overlord' is a well - known one. The main character's situation as a monster in the game - like world is full of surprises. Then there's 'The Rising of the Shield Hero' where the protagonist is initially treated like a monster by others due to false accusations. He has to fight his way through with his monster - like summoned creatures. And 'Re:Monster' offers a unique take on a human becoming a goblin and rising to power among the monster ranks.
I'm sorry, I'm not very familiar with 'Monster no Goshujin' light novels specifically. You could try searching for it on specialized light novel websites or in online bookstores.
One more to consider is 'Tower of God'. There are many strange and powerful creatures in this light novel that can be thought of as monsters. The story follows the journey of the main character as he climbs the tower, encountering numerous challenges including battles with these'monster - like' beings.
I'm not very familiar with 'Monster no Gosh' light novels specifically. But you can try searching on some popular light novel platforms like J-Novel Club or BookWalker. They usually have a wide range of light novels available, and you might be able to find it there.
Another one might be 'Overlord'. In this light novel, the main character is a powerful sorcerer who gets trapped in a game world as his in - game character, which is basically a very powerful undead monster. The story unfolds as he tries to conquer this new world with his minions, which are also various types of monsters. It's full of strategic battles and political intrigue within the monster hierarchy.
I'm not sure about specific 'Monster Doctor' light novels off the top of my head. But you can try searching on websites like Amazon or Goodreads. They usually have a wide range of light novels, and you might be able to find some related to 'Monster Doctor' there.
One common characteristic is their ability to attach or infect other organisms. They often rely on a host for survival or to spread. For example, they might attach to animals or humans like in many stories. Another characteristic is that they usually have some sort of adaptation to go unnoticed. This could be camouflage or the ability to hide within the body of the host. Also, they are often portrayed as having a negative impact on the host, whether it's causing illness, changing behavior, or draining the host's energy.
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.
One popular 'Master of Monster' light novel is [specific title if known]. It often features an engaging story with unique monster designs and a protagonist who has to master various aspects related to the monsters, like taming or battling them.