Well, without more information, it's hard to say precisely. Generally, visual novels can cover a wide range of themes. 'hara kano visual novel' could be about the experiences of its characters, maybe their personal growth, or it could center around a particular event or series of events that unfold in a fictional world. It may also incorporate different art styles and narrative devices typical of visual novels.
Well, 'photo kano visual novel' is probably a story - driven experience where the visual aspect is important, just like other visual novels. Maybe it has a unique art style to depict the world of photography. It could be about a young photographer's journey, his or her growth in the field of photography, and the relationships that are formed through the shared passion for photography.
A fanfiction might explore a scenario where Kido and Kano have to work together to face a new threat in Mekakucity. Kido's calm and collected nature could complement Kano's more mischievous but also resourceful personality. They might start off bickering but as the situation gets more serious, they realize how much they rely on each other and develop a newfound respect.
Since I don't have detailed knowledge of the 'photo kano visual novel', I can't give a definite answer. Generally, if it adheres to common standards of family - friendly content such as having a positive message, no inappropriate images or text, it could be suitable for all ages. However, some visual novels are designed with a more mature audience in mind, so it's important to look into reviews or more information about it.
One common theme is friendship development. Since they have different personalities, seeing how their friendship grows is a popular topic. For example, in many fanfics, they start as acquaintances and gradually become close friends.
The story might revolve around Tai and Kari's discovery of the 'Light of Desire'. It could be that they initially encounter some strange phenomena in the digital world that lead them to this powerful and mysterious light. As they explore further, they find out that it has the potential to either save or destroy the digital world. Along the way, they might meet old friends and foes, and their bond as brother and sister would be tested as they make decisions about how to handle this newfound power. Their Digimon would also play crucial roles, evolving and adapting to the challenges presented by the situation related to the 'Light of Desire'.
Perhaps it began with a chance encounter. They could have bumped into each other on a busy street. Tk might have accidentally spilled his coffee on Kari, and in that moment of chaos, they locked eyes and there was a spark. They started to apologize to each other, and then got to chatting. Before they knew it, they were exchanging phone numbers and that was the start of their love story.
Finding 'hara kano visual novel' could be a bit of a challenge. It may not be on mainstream gaming platforms. You could start by looking at specialized visual novel communities or forums. People there might be able to point you in the right direction, whether it's an independent website that distributes it or some other less - known source. It's also possible that it was only available in certain regions or at a specific time, so that could further complicate the search.