A 'netorare novel' is a type of fictional work in Japanese literature. 'Netorare' roughly translates to 'cuckolded' in English. These novels often explore themes of romantic or sexual jealousy, betrayal, and complex relationship dynamics. They typically involve a main character who experiences the pain of having their romantic partner being unfaithful or stolen by someone else.
Yes, they are quite popular in certain circles, especially among those interested in exploring complex relationship themes in literature. However, they may not be mainstream in a global sense.
Netorare visual novel is a type of visual novel that often involves themes of cuckoldry in relationships. However, such themes can be considered inappropriate or offensive by some.