Another option is 'Ascendance of a Bookworm'. The main character has to navigate a new world and rise in status, which has some parallels to the idea of becoming a queen in 'I shall become the queen light novel'. It's a great read for those who like the genre.
'My Next Life as a Villainess: All Routes Lead to Doom!' can also be considered. The female lead has to change her fate in a new world setting, similar to how the character in 'I shall become the queen light novel' might strive towards her goal of becoming a queen. It has an interesting plot with lots of character development.
One similar light novel could be 'Ascendance of a Bookworm'. It also has a unique protagonist in a different kind of world setting, with the main character having to adapt and strive in a new environment. Another one is 'That Time I Got Reincarnated as a Slime'. The main character is reborn in a different form and has to build their own 'kingdom' in a sense, much like the idea of living as a prince in the given novel.
Self - discovery is also likely to be a theme. As she pursues the path to become a queen, she will surely learn more about herself, her strengths, and her weaknesses. She may start as an ordinary person or a lower - ranked individual, and through her journey, she discovers that she has what it takes to be a queen, which includes not only external skills but also internal qualities like courage and wisdom.
There's also 'Date A Live'. It involves the main character having to deal with multiple female characters in a rather unique situation. The interactions between the characters are complex and interesting, much like what you might find in a 'harem queen light novel'.
There's also 'Sword Art Online'. While not exactly the same, it has a protagonist in a virtual world with unique challenges and growth. The main character has to adapt to a new environment and overcome various obstacles, much like in 'At Night I Become a Monster'.
One similar light novel could be 'Overlord'. It also features a protagonist in a powerful position, much like in 'I'm the King Light Novel'.
One similar light novel could be 'Sword Art Online'. It also has a unique world - building and engaging characters. Another one is 'Overlord', which shares the theme of a powerful protagonist in a different kind of world.
One similar light novel is 'Battle Through the Heavens'. The story follows the main character's path of self - improvement and achieving a high - level status, much like the concept in 'I am supreme light novel'. And 'Desolate Era' also has a story that involves the main character's rise to power and supremacy.
Well, 'Baccano!' could be a similar choice. It has elements of mystery, action, and a unique set of characters just like 'I am a killer light novel'. The story is told in a non - linear way which makes it really interesting. Another one is 'The Melancholy of Haruhi Suzumiya'. Although it's more on the slice - of - life side, it has some elements of mystery and the characters are really well - developed, much like in 'I am a killer light novel'.
Well, 'Overlord' is a great light novel with a unique isekai concept. Another one is 'Re:Zero − Starting Life in Another World' which has an interesting plot and character development. And 'Sword Art Online' also has a large following for its virtual reality and adventure themes.
There's 'The Rising of the Shield Hero'. It has a great story about a hero who is wrongly accused and has to fight against all odds. It has elements of character growth and adventure. 'Log Horizon' is also good. It focuses on a group of players trapped in a game world and how they adapt and change it, which may be somewhat related to the appeal of 'I am trash light novel' in terms of its own world - building.