Obviously, Itachi Uchiha is the most important character. He is the center of the story, the one whose journey between light and darkness is being explored.
I think another important theme is sacrifice. Itachi sacrificed his reputation, his relationship with his family and his own life in a way. He lived in the shadows, in this 'darkness' of secrecy and lies, all for the 'light' which was the safety and future of the Hidden Leaf Village. His story in the novel is a complex exploration of these ideas of sacrifice, light and darkness.
I strongly recommend the novel 'Douluo Continent's Yin-Yang Judgement' to you. The protagonist, Ye Chen, transmigrated to the Douluo Continent and awakened the two polar attributes that represented extreme light and darkness. In the process of growing up, he had experienced countless difficulties and tests, constantly searching for his true beliefs and home. In this world, the boundaries between light and darkness are blurred, constantly challenging the boundaries of our thinking. It was worth reading! I hope you like this fairy's recommendation. Muah ~😗
Kazuma is one of the main characters related to Darkness. Their relationship is full of comical exchanges. Also, Aqua and Megumin are important characters in relation to Darkness. They are all part of the same party in the story.
Light and darkness was one of the common topics in novels. It often involved human nature, morality, faith, and so on. If he wanted to master the strategy between light and darkness, he first needed to understand their definition and meaning. Light usually referred to justice, kindness, courage and other qualities while darkness referred to evil, cruelty, cunning and other qualities.
In novels, light and darkness were usually judged by the actions and choices of the characters. If a character showed the qualities of justice and bravery, then he was bright; if a character showed the qualities of evil and cunning, then he was dark.
How to turn into light and darkness referred to the transformation of characters through various means in the novel. Ways to turn to the light may include showing the qualities of justice and courage, accepting correct teachings, finding salvation, etc., while ways to turn to darkness may include showing the qualities of evil and cunning, accepting wrong teachings, giving up salvation, etc.
The hidden code in a novel was usually some special plot or clue that could be discovered by reading the novel. These codes could affect the character's fate, storyline, or ending.
The 'Konosuba' light novel focuses on a comical and adventurous story. In it, Darkness has some interesting relationships. She is often part of the group's misadventures, with her own quirks and her relationship with the other characters being a source of both humor and development. For example, her relationship with Kazuma is full of banter and comical misunderstandings.
The 'beyond another darkness light novel' might center around themes such as redemption, self - discovery, and the triumph of good over evil. It could tell the story of a world that has been overshadowed by a particular type of darkness, and the characters in the novel are on a quest to break free from it. They might encounter different obstacles, make new allies, and through their experiences, they find a way to move towards the light, both literally and metaphorically. This could involve exploring uncharted territories, facing inner demons, and ultimately achieving a new state of being.
The theme of self - improvement is also there. For example, Kazuma, the main character, starts as a bit of a loser but gradually grows in the new world. And the light novel also has a theme of satire, poking fun at common tropes in RPGs and fantasy stories.