Since I don't have detailed knowledge of 'watashi ga koibito light novel', it could potentially be about a love story. Maybe it tells the tale of a protagonist's search for love, their encounters with different people, and how they navigate the complex emotions that come with falling in love. It might also include elements of Japanese culture and society as light novels often do.
I'm not entirely sure as the title is rather specific and not a widely known mainstream visual novel. It could potentially be about a character who keeps repeating something and is unable to do something. Maybe it's a story of self - discovery and struggle within the context of a visual novel world.
Some specialized Japanese or Asian bookstores might carry it. Also, you can look into second - hand bookstores, as sometimes they have rare or hard - to - find light novels. Another option is to check with local libraries. If they have it, you can borrow it first to see if you like it before buying.
There's no way to accurately determine the main characters just from this title. However, if we assume based on the title, it might be a first - person narrator, perhaps a young person, given the use of 'watashi' which means 'I' in Japanese. This character could be in a world filled with other supporting characters who either contribute to their inability to do something or are witnesses to their repetitive cycle.
Since I don't have first - hand knowledge of this light novel, it's just speculation. It could be a story that defies traditional relationship norms. Maybe the main character is in a situation where they are the object of someone's affection instead of what is expected, like a daughter - like figure. And this unexpected situation could drive the plot, with various characters dealing with their emotions and the implications of such an unusual preference.
I'm not sure specifically as I haven't read it in detail. But generally, a light novel often involves elements like unique characters, a fictional story world, and usually some kind of relationship or adventure. Maybe it's about a love story or a coming - of - age journey with the theme of falling in love.