Since the title is 'Nadia and the Secret of Blue Water Novel', Nadia is bound to be a central figure. She could be a young girl full of curiosity and determination. There may be a group of friends around her, each with their own unique skills and personalities. For example, there could be a strong and brave boy who helps in physical challenges. And there might be an old sailor who has some knowledge about the blue water and its secrets, and he becomes an important part of the story as he guides Nadia and her friends on their journey.
Well, Nadia is surely a main character as the title features her name. There might be a male lead character as well, who could be a partner or a guide to Nadia. And there may be some antagonists, perhaps people or creatures who are trying to keep the secret of the blue water from being discovered. There could also be some wise old characters, like a mentor figure, who gives Nadia and her companions advice along the way.
In 'Nadia and the Secret of Blue Water Novel', a prominent theme is the search for truth. Given the mention of a secret, the characters are likely on a quest to uncover the truth about the blue water. Another theme is courage. Facing the unknown, whether it's the mysteries of the blue water or the obstacles in their path, the characters need courage. Additionally, the theme of loyalty could play a big part. The characters might need to be loyal to each other in order to succeed in their mission related to the blue water.
Since I don't know the specific 'nadia visual novel', Nadia herself is most likely a main character.
I don't know for sure since I haven't read the story, but there could be an adventurous young person.
The main characters are obviously Ali and Nadia. They are the ones around whom the love story revolves.
The most obvious main character is the water mitty. Since the story is about its secret life, it will be the one the story revolves around. However, depending on the story, there could be other supporting characters like other small water creatures that interact with the water mitty, or perhaps elements of the water environment that could be considered as characters in a sense, like a big rock or a water current that affects the water mitty's life.
I'm not certain. But usually in such novels, there would be a protagonist who is likely to be closely associated with the events related to the water. Maybe a detective or someone with a personal connection to the water - related mystery.
I'm not sure as I haven't read the novel specifically, but usually main characters are those who drive the story forward, so it could be a protagonist who has a central conflict or goal in the story.
Since I don't know the exact 'blue lights novel', it's hard to say. But it could have a young protagonist who is curious about the blue lights. Maybe there's also an old sage - like character who has some knowledge about the blue lights and helps the main character on their journey.
There's no way to be certain without reading the novel. It might have a group of friends as main characters, and they all have different relationships with the blue lake. For example, one might be a local who has always known the lake's secrets, and another could be a newcomer who is intrigued by it.
There could be a female character who is very alluring and mysterious. She might play a crucial role in the story, like being the object of the protagonist's affection or the source of some kind of conflict. And there may also be an older figure, maybe a mentor or a villain, who influences the actions of the main character.