The 'Testament of New Sister Devil' light novel is mainly about the story in a supernatural world. It involves various characters with unique powers and relationships. For example, there are often complex interactions between demons and other beings. It typically has elements of fantasy, adventure, and sometimes romance as the characters navigate their world full of challenges and secrets.
The Testament of Sister New Devil light novel is about a young man who suddenly finds himself in a rather unusual situation. He becomes involved with a devil sister, and from there, the story unfolds with a mix of action, humor, and the development of relationships. There are often battles against otherworldly foes, and the main character has to navigate through a world full of secrets and powers. The harem aspect comes in as he has interactions with multiple female characters, each with their own distinct personalities and roles in the story.
It's about a world where demons exist. Basara, the protagonist, finds his life turned upside down when Mio and Maria enter his life. Mio is a demon lord candidate, which means there are threats from other demons who don't want her to succeed. Basara has to protect her while also managing his feelings for her and Maria. The story is filled with battles, both physical and emotional. For example, Basara has to fight against other demons who are after Mio's life. And at the same time, he has to figure out his romantic feelings for the girls around him.
One of the main themes is the complex relationships. For example, the relationship between the main character and his sister is full of twists and turns. There's also the theme of power and how it is used and abused in the supernatural world depicted in the novel. Another theme could be about identity, as characters often have to figure out who they are in the midst of all the chaos and newfound powers.
The main character is the new sister devil, of course. And there are likely to be some other significant characters around her. Maybe there's a mentor - like figure who helps her understand her powers and her place in the devilish world. There could also be an antagonist, perhaps another powerful being who opposes her for some reason, like power envy or a difference in ideology.
Well, Maria Naruse is also a key character. She has her own unique personality and abilities. Basara is often in the middle of various events and relationships. He has to deal with his own powers and the relationships with Mio and Maria. Mio, being a demon princess, has her own goals and secrets which are gradually revealed throughout the story. And Maria is there to support and also sometimes create trouble for Basara in different situations.
The main character is a male protagonist who is thrust into this world of devils and magic. There's his devil sister, who plays a crucial role in the story. There are also likely other female characters who form part of the harem - like setup, each with their own unique traits and backstories that contribute to the overall plot as they interact with the main character.
One key feature is its unique world - building. It creates a complex and interesting fictional world with its own rules, species, and power systems. For example, the different types of devils and their hierarchies add depth to the story.