There could be the main character, the one for whom she is the 'light'. He might be a young man with his own set of problems and dreams. And of course, the female character who is the central figure in terms of being the source of light. Maybe there are also antagonists or characters who oppose the relationship or the growth of the main character, but this is all speculation without reading the visual novel.
We can only guess at this point. The male lead is probably a character in need of some kind of change or growth. And the woman, his 'light', is likely a character with unique qualities like kindness, wisdom or strength. There may be other characters like a mentor figure who gives advice to the main character or a rival who competes for the affection of the female character, but again, this is just speculation.
I don't have information on the main characters of 'Snow Light Visual Novel' as I haven't read it. But typically in a visual novel, there could be a protagonist who is at the center of the story. There might also be a love interest, a mentor - like figure, or some friends or family members that play important roles in the character's journey.
I don't know the specific main characters as I haven't experienced this visual novel. However, it could have a protagonist who is the one searching for the 'light in the dark'. There might also be a mentor - like character who guides the protagonist towards that light.
The main characters in 'light in the dark visual novel' could be diverse. There might be a character who has lost their way in life, representing the 'dark' part of their existence. Then there could be another character who enters their life and becomes the 'light'. For instance, a lonely artist who has lost inspiration (the dark) and then meets a muse - like figure (the light). Or it could be a group of friends who are trying to survive in a difficult situation together, and each of them plays a role in finding the 'light' within that darkness.
I'm not sure specifically as I haven't read it in detail. But generally, a visual novel titled 'She was my light' might be about a relationship where a female character plays a very important and positive role, perhaps like being a source of inspiration, support or love for the protagonist.
Since it's based on a diary, the main character is probably the diary's author. There might also be secondary characters such as a best friend who plays an important role in the author's life, or a love interest that is often written about in the diary. However, without more information about the 'my diary visual novel', it's hard to say for certain.
Since I don't know the details of 'my master visual novel', it's hard to determine the exact main characters. However, in a visual novel with such a title, you can expect a main character who embodies the role of the master. This character may be joined by characters with different personalities and motives. For instance, there could be a wise advisor character, a strong - willed companion, or an antagonist who opposes the master's plans. These characters would interact with the master and drive the story forward through their relationships and conflicts.
I'm not sure exactly, but probably the 'lady' in the title is one of the main characters. There might also be a male lead if it has a romance aspect.
Since I don't know the specific 'My Girlfriend Visual Novel', I can't say for sure. But likely the main characters are the protagonist and his girlfriend.
Since I don't know the specific 'my darling visual novel', I can't say for sure. But usually, there would be a protagonist who is likely to be the one with the strong feelings for the 'darling' character. There might also be friends or family members of the main characters who play important roles in the story.
The main characters are probably the protagonist and their senpai. There might also be some supporting characters like the protagonist's friends or classmates.