I don't have the exact information, but they could be ordinary people who find themselves in extraordinary situations due to the 13th month.
There's no way to know precisely without reading it. But generally, in a visual novel, there are often characters that drive the story forward. It could be a group of friends who notice the strange occurrences during the 13th month and decide to figure out what's going on. There might be a protagonist who is the most affected by the changes brought by the 13th month, like a person who has a special connection to this extra month, and then there are secondary characters such as the protagonist's family members or neighbors who are also involved in the story in different ways.
The '13th month visual novel' could be centered around a variety of themes. It might be a story of a parallel universe where the 13th month exists. In this world, there could be new cultures, traditions, and powers associated with this special month. The characters may be on a quest to understand the significance of this 13th month, whether it's related to a prophecy, a long - lost magic, or a key to saving their world. It could also be a story about the relationships between characters that are shaped by the existence of this extra month.
The details of the main characters in 'A Month of Sundays' are unknown to me without reading it. But thinking about typical novel structures, there might be a character who is at a crossroads in their life. This character could be male or female, young or old. There may be other characters that are related to this main character in different ways. For example, a family member who has a strained relationship with the main character, or a new acquaintance who brings unexpected changes into the main character's life. All these characters together would form the web of relationships that the story is built upon.
Typically, there would be a main character who is the outsider coming to the country. There might also be local villagers or townspeople who interact with this main character. Their interactions would drive the plot forward, like an old farmer who imparts some wisdom to the newcomer, or a young girl from the village who shows the main character the beauty of the local area.
In the '7th guest novel', we can assume that the 7th guest is a crucial character. However, there could be other important characters as well. There might be a character who is the organizer of the event to which the guests are invited. This person could have their own reasons for inviting the 7th guest, whether it's for good or bad. Another possible main character could be a detective - like figure if the novel has a mystery element. This character would be trying to figure out the true nature of the 7th guest and any secrets they might be hiding. Additionally, there could be a character who has a pre - existing relationship with the 7th guest, which adds more depth and complexity to the story.
I don't know the exact main characters as I haven't read the novel. But surely, the 8th man is one of the main characters. There might be his friends or foes who play important roles in the story.
Since I don't know the specific '7th heaven novel', I can't say for sure who the main characters are. They could be angels, humans on a spiritual journey, or some other fantastical beings.
I'm not sure specifically as I don't know which light novel series you're referring to. But generally, it could be the same main characters from the previous novels, just more developed.
I'm not sure specifically as I haven't read it. But it could be a student who is the central figure, dealing with the failure in the 12th grade. There might also be teachers or family members who play important roles in their journey.
The main characters include a young woman and her father. There are also likely other characters they meet during their journey through the kingdoms, like the rulers or magical beings.
I'm afraid I can't answer who the main characters are in this novel. You could check the book's description on the cover or at the back, or look for some reader reviews which might mention the main characters.