Well, from the title 'kanojo ni uwaki sareteita ore ga web novel', it could potentially be a story about a male protagonist ('ore') who has experienced his girlfriend ('kanojo') having an affair ('uwaki'). Maybe it delves into his feelings of betrayal, how he copes with it, and what actions he takes. It might also explore the relationship dynamics before and after the affair within the context of a web - based novel.
Since 'kou 2' isn't a common term that I'm familiar with, it's hard to be precise. However, if we break it down, 'time leaped' implies a time - travel aspect. So perhaps the novel is about the protagonist ('ore') who has made a time leap into a situation or place named 'kou 2', and the story could revolve around how he deals with this new environment, the changes in the timeline, and the consequences of his time - leap.
I'm not aware of its popularity. There are so many web novels out there, and without more information or research, it's hard to say if it's popular or not.
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.
Given that we have so little information about 'kou 2 ni time leaped shita ore ga novel', it's a challenge to recommend similar works. But if we consider the time - travel aspect, novels like 'All You Need Is Kill' (which has a time - loop aspect similar to time - leap in a way) could be considered. Also, in the world of Japanese literature, there are often stories that play with time and space concepts. So perhaps some works by Haruki Murakami, like 'Kafka on the Shore' which has a certain dreamy and time - warped feel to it, might have some loose similarities in terms of exploring different states of existence which could be related to the idea of time - leaping in the given novel.
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 entirely sure as I haven't played this visual novel specifically. But generally, a visual novel often involves a story with characters and different plotlines. It might be about the relationship between the 'aruji' (master) and the'shitsuji' (servant) in a fictional setting.