A bunny girl novel could be a story that features a bunny girl as a main character. Bunny girls are often associated with the concept of a girl wearing a bunny costume, which might be in a cute, anime - style or in a more unique fictional setting within the story.
There may not be a large number of novels that are specifically titled 'bunny girl novels' that are widely known in mainstream literature. But in the world of Japanese light novels or some niche genres, there could be works where bunny - girl characters play important roles. For example, in some works that combine elements of fantasy and moe (a Japanese term for a feeling of strong affection mainly towards characters in anime, manga, etc.), bunny - girl characters might be part of the story's charm. But it's not like there's a 'Harry Potter' - level of popularity for a 'bunny girl novel' at present.
A bunny girl transformation story could be about a character, perhaps a girl, who undergoes a transformation into a bunny girl. This might involve a magical event like finding a special item that causes the change. For example, she could find a pair of bunny ears that when put on, not only gives her the ears but also a cute bunny tail and changes her whole appearance to that of a charming bunny girl.
Typically, in a 'bunny girl lemon fanfic', there might be a character who is a bunny girl. The 'lemon' aspect might imply some sort of citrus - themed elements in the story, perhaps related to a setting like a lemon grove where the bunny girl has an adventure. However, this could vary greatly depending on the author's creativity.
The 'bunny girl senpai novel' mainly follows the story of Sakuta Azusagawa and Mai Sakurajima. Their relationship develops as they encounter various supernatural phenomena. For example, Mai is often not noticed by others in some situations which is part of the strange events in the story. Sakuta tries to help her and in the process, they grow closer.
Well, without more context, it's difficult to say precisely. It might be a story that focuses on the expansion of the idea of a bunny girl. Maybe it's about different versions of a bunny girl character emerging over time, or the spread of the bunny girl concept in a particular cultural or fictional setting. For example, if it's related to a game, it could be about new levels or areas that a bunny girl character can access, which is like an 'expansion' of her story.
Yes, the Bunny Girl Senpai manga is over. It concluded with a set of events that brought the various story arcs to a satisfying conclusion. Despite the end, it remains a beloved series for many manga enthusiasts.