One similar light novel could be 'A Record of Mortal's Cultivation to Immortality'. It also has elements of epic adventures in a fantastical world with a focus on the protagonist's growth in a world filled with magic and mystery.
'Coiling Dragon' is also a great choice. It features an exciting journey of the main character, with a world full of different races, powers, and a lot of action-packed scenes which are somewhat similar to what you might expect from 'epic of divinity light novel'.
Another option is 'The Legend of the Condor Heroes'. It has an epic feel with its complex characters and a grand story of heroism, much like 'epic of divinity light novel' in terms of the scope of the story.
One of the main themes is probably heroism. The characters might be on a journey to overcome great challenges and save their world or achieve something great, which is a common trait in an epic story.
One similar light novel could be 'Sword Art Online'. It also has an epic adventure aspect with a hero in a virtual world facing various challenges. Another one is 'Overlord', where the main character has to navigate a new and often hostile world, much like in 'the epic tale of the forsaken hero'.
I'm not entirely sure as I haven't read it fully. But generally, it might be about a world filled with savage elements and divinity. It could involve characters' adventures in a realm where there are both brutal and divine aspects, perhaps exploring themes like power, morality and the relationship between the mortal and the divine.
I'm not sure exactly as I haven't read it. But usually, light novels with such a title might involve a protagonist with some sort of divine origin and their adventures in a fictional world.
I don't know specifically as I haven't read the novel. But usually in such novels, there's often a central hero or heroine who is at the heart of the story. There might also be a mentor figure, perhaps an old sage who has some knowledge about the savage divinity.
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.