I'm not sure specifically as there could be many visual novels with this name. It might be about a story set in a world with a lot of white and blue elements, perhaps a cold, icy landscape or a place with a certain color - themed aesthetic. It could involve characters whose fates are intertwined in this unique setting.
Well, without more context, it's hard to say exactly. 'White blue' could symbolize purity and calmness. So the visual novel might revolve around characters who are on a journey to find inner peace or are in a situation where these qualities are important. Maybe it's a love story where the white and blue are representative of the two lovers' personalities or the emotions they evoke.
A 'white blue visual novel' could be about a variety of things. It could be a fantasy story where the white and blue represent different magical elements or factions. For example, a white - magic group and a blue - magic group. The story might follow the conflict or cooperation between them. It could also be a coming - of - age story where the main character is constantly surrounded by these white and blue visual cues that help shape their growth and understanding of the world around them.