I'm not sure specifically as I haven't read it. It could potentially be about a female character (the queen) who has some sort of connection with a scalpel. Maybe she's a healer or a surgeon in a fictional world created in the light novel.
Online platforms like Amazon or Barnes & Noble's website are good places to start. They usually have a wide selection of light novels, and you can search for 'queen with a scalpal light novel' specifically. Also, some Japanese - focused online bookstores might carry it if it's a Japanese light novel.
The 'Shadow Queen Light Novel' could potentially revolve around a character who is in the shadow, meaning she may not be in the spotlight initially. It could be a story of her journey to gain recognition or power. Maybe she has to face many challenges and political intrigue in a fantasy - like setting, with different factions and characters that either help or hinder her progress.
The 'Queen of Hearts in Wonderland' light novel likely delves into the character of the Queen of Hearts in the Wonderland setting. It might explore her backstory, her tyrannical rule, and how she impacts the other characters in Wonderland. The novel could also contain elements of the fantastical world - like the strange creatures and the illogical rules that are characteristic of Wonderland.
One common theme is transformation. The lady transforms from an ordinary or oppressed state to a powerful queen. Another is power struggle, as she has to deal with those who oppose her rise to the throne.
The 'queen's blade light novel' typically revolves around a competition among various female warriors. Each has her own unique abilities, backstories, and motives. The story is set in a fictional world with different kingdoms and terrains. There are elements of magic, swordplay, and political intrigue as these women vie for the top position, which is often related to some sort of queenship or supreme power within the story's universe.
As I'm not familiar with this light novel specifically, we can only speculate. It could be a story set in a fictional medieval - like world. The lady in question might be of noble birth but face many obstacles on her path to queenship. This could involve battles, both physical and mental, against those who oppose her rise. It might also explore her relationships with other characters, such as a mentor who guides her, or a love interest who either helps or hinders her journey to becoming a queen.
One main theme is probably relationships. With the harem aspect, there are multiple relationships that the main character has to navigate. Another could be power dynamics, as in a harem situation, different characters may have different levels of power or influence.
The 'Long Live the Queen' light novel might revolve around a queen in a unique world. It could tell of her ascension to the throne, perhaps she had to fight against all odds to claim it. It may then focus on how she rules, her policies, and how she deals with different factions within her kingdom. There could be a love story intertwined as well, maybe with a commoner or a noble from another land that adds an extra layer of complexity to her life as a queen.
Guardian Sweetheart was an anime novel that told the story of Yameng's two sweethearts, the sweethearts of the Queen of Darkness and the Queen of Light, who fought and protected the world with her guardians.