Well, 'Re:Zero − Starting Life in Another World' has some similarities. It has a complex story with a main character who faces various challenges, much like what might be in 'in the doghouse light novel'. Also, 'Sword Art Online' is somewhat alike in terms of its genre and the way it presents a fictional world with its own rules and stories.
One main theme could be self - discovery. The characters might be in situations where they learn more about themselves. Another could be friendship. They probably have to rely on their friends in different scenarios.
You could try 'Lily Light Novel'. It has a similar tone in terms of the soft and delicate nature of the story. Another one is 'Rose Light Novel' which also has elements of beauty and a touch of mystery like 'gardenia light novel'.
If the '428 light novel' has an action - packed plot, then light novels like 'Sword Art Online' might be of interest. It has a lot of action scenes, adventure, and a bit of romance as well. However, this is all just guessing based on the lack of information about the '428 light novel'.
One could be 'Sword Art Online' light novels. It has an interesting virtual - world concept and engaging characters. Another similar one might be 'Log Horizon'. It also deals with characters trapped in a game - like world and has great world - building. And 'Overlord' light novels are also a good choice. It focuses on an overpowered character in a game - turned - real - world scenario.
There's also 'The Rising of the Shield Hero'. It has a story that unfolds in an interesting fantasy world, much like 'ero sensei light novel' might be set in an engaging fictional world. The character development in 'Shield Hero' is also something that could be comparable, with the main character evolving over the course of the story in response to various challenges, similar to what could potentially be in 'ero sensei light novel'.
One similar light novel is 'Sword Art Online'. It also has elements of a complex fictional world and characters facing challenges within that world. Another is 'Attack on Titan' which shares the theme of a struggle against an oppressive force. And 'Fullmetal Alchemist' is also somewhat similar as it has deep themes and complex character relationships.
Well, 'A Record of Mortal's Cultivation to Immortality' is quite similar. It shares the idea of a person striving in a world full of challenges and gradually becoming stronger, much like in 'Apotheiosis light novel'. Also, 'I Shall Seal the Heavens' has elements that are alike, such as the development of the main character's abilities and the complex world - building.
Sorry, as I don't know what'mlvf light novel' is about, it's difficult to recommend similar ones. But if it's a fantasy light novel, you could try 'Sword Art Online' light novels. They are very popular in the fantasy genre.
One similar light novel could be 'Oreimo'. It also has elements of slice - of - life and interesting character relationships.
One similar light novel is 'Oregairu'. It's about a high - school boy who has a rather cynical view of the world and his relationships with those around him. This exploration of relationships is somewhat like what you might find in 'kanokon light novel'. Also, 'Rascal Does Not Dream of Bunny Girl Senpai' is another one. It deals with some rather interesting and complex relationship dynamics, just like the 'kanokon light novel' might, and it has a bit of a supernatural element as well.