Since I don't have much information about this 'oh dear nemesis novel', it could potentially be a psychological thriller. The 'nemesis' could be a character within the mind of the protagonist, causing internal conflict. Or it could be a story set in a fantastical world where the nemesis is a powerful magical being that the main character has to face. It might also explore themes of revenge, redemption, or self - discovery through the relationship with the nemesis.
You can also check your local library. They may have a copy of the 'oh dear nemesis novel' in their collection. If not, they might be able to get it through inter - library loan.
I'm not sure which specific 'dear nemesis novel' you are referring to. There could be many novels with such a title or a similar concept. It might be a self - published or relatively unknown work.
I don't know as I haven't read the 'dear nemesis novel'. It could be two rivals from different backgrounds, like a rich and a poor character, or two characters with different beliefs.
Definitely. Yu-Gi-Oh began as a manga series and its success led to the creation of other related media such as the anime and the card game. The manga laid the foundation for the entire franchise.