The main character is a male who has to survive in this post - virus world. Among the female characters, one of the key ones is the male lead's sister. Her presence affects his decisions and actions. Then there are female characters who are part of the new society he is in. For instance, there could be a female doctor who tries to find a cure for the virus and at the same time has a relationship with the male lead. There are also strong - willed female warriors who protect the group, and their interactions with the male lead add depth to the story.
The 'Shuumatsu no Harem' light novel is set in a world where a virus has wiped out most of the male population. The story follows the remaining male protagonist as he navigates a world filled with various female characters. It involves themes of survival, relationships, and the rebuilding of society in this new, male - scarce environment.
I'm not entirely sure as I haven't read it in detail. But generally, it might be a novel that involves a harem theme, perhaps set in a unique or fantastical world. Maybe it has a male protagonist surrounded by multiple female characters with various relationships and adventures.
Another option is to search for it in libraries. Some libraries have a section dedicated to international literature, especially if they have a good collection of Japanese novels. You can ask the librarians if they can help you locate the 'shuumatsu no harem fantasia novel' either in their physical collection or if they can access it through inter - library loan services.
There might be a mentor - like character as well. This character could be an older and wiser figure who guides the protagonist. They might have special knowledge or powers that are crucial for the protagonist's development. For example, they could teach the protagonist how to use a certain magic or skill.
Since we don't have much information about this specific'shuumatsu visual novel', it could be about various things. It might be a fantasy - based story set at the end of a magical age. The characters could be dealing with the decline of magic and having to adapt to a new world order. Or it could be a psychological exploration where the 'end' is more of an internal state for the characters, such as the end of their beliefs or values, and the visual novel follows their journey of self - discovery and transformation in the face of this internal 'end'.
Another interesting plot could be a love story. Picture a character from RWBY falling in love with a character from Shuumatsu no Valkyrie. This would face many challenges, such as the differences in their worlds, cultures, and the fact that they are both often in the middle of dangerous situations. But their love could be a force that brings their two worlds closer together.