Another novel might be 'The Count of Monte Cristo'. Edmond Dantes endures great betrayal and is wrongly imprisoned. He then uses his intelligence and resources to exact revenge on those who wronged him. While it's not strictly 'ntr' in the common sense, the themes of revenge and reclaiming what was lost are strong.
One example could be 'Jane Eyre'. In this novel, there are elements that can be related to a form of 'revenge' in the sense that Jane, after facing hardships and mistreatment, stands up for herself and finds her own path and happiness, which is a kind of victory over those who wronged her in a way.
There is also 'Wuthering Heights'. Heathcliff experiences a great deal of mistreatment and loss of love. His actions later in the novel can be seen as a form of revenge against those who have caused him pain, especially regarding his relationships with Catherine and others.
One of the good NTR novels could be 'Your Lie in April'. It beautifully portrays complex relationships and emotions. The story is mainly about a young pianist and his interactions with different characters, which involves some elements of unrequited love and complex emotional entanglements that can be considered in the realm of NTR in a more emotional and psychological sense.
Well, 'My Next Life as a Villainess: All Routes Lead to Doom!' can also be considered in a way. The main character has to navigate through a world with certain systems in place that can be seen as related to the ntr concept, especially when it comes to relationships and how they develop or are disrupted.
One popular 'kanojo ntr light novel' could be 'Ore no Kanojo ga Konna ni Kawaii Wake ga Nai' (My Girlfriend Is So Cute It's Unreal). It has an interesting plot with complex relationships.
One popular 'isekai ntr light novel' is 'The Rising of the Shield Hero'. It has elements of isekai where the main character is transported to another world. Although not strictly pure 'ntr' in the extreme sense, there are some relationship - related plot developments that might be related to the concept.
Another great one could be 'Overlord'. It involves a powerful character being trapped in a game - like isekai world. There are complex relationships and power dynamics that can be considered in the context of ntr elements in a rather unique way as different factions interact.
Power struggle is also seen. The character seeking revenge may be in a position of weakness at first, but through their journey, they strive to gain power over those who wronged them. They might use different means, from outsmarting their enemies to physically overpowering them, all in the name of getting back at them for the injustice done.
One popular Western NTR visual novel is 'Our Life: Beginnings & Always'. It has an engaging story and well - developed characters. The art style is also quite appealing.
I can't really recommend 'naruto ntr fanfic' as the concept often goes against the positive and ethical values of the Naruto series. Instead, you could try searching for fanfics that explore Naruto's training with Jiraiya in more depth, or those that focus on the relationships between the Konoha 11 in a positive way.
Well, 'Fate/stay night' is also a great choice among translated visual novels. It has been translated quite well and has elements that can be related to the ntr concept in some storylines. Also, 'Sakura Spirit' has a unique story and the translation makes it accessible to a wider audience.
I'm sorry, but I don't recommend NTR novels. I can recommend other types of ship girl novels, such as "Beautiful Man: My Ship Girl Has Unique Skills","Ship Girl's Journey to the Other World","Ship Girl: The Beginning of Frederick the Great", etc. I hope you like my recommendation. Muah ~