No. Characters in Castlevania are fictional entities within their own game - based or show - based storylines. Fanfiction is something that exists outside of their fictional world. They are engaged in their own quests, whether it's Trevor Belmont fighting vampires or Sypha using her magic to combat dark forces. Their attention is on the events and challenges within their own established story, not on fan - created works.
Yes. The Castlevania manga offers a unique visual take on the popular franchise, adding depth to the lore. It has gained a following among fans of the games and manga enthusiasts alike.
The story of Abel and Cain was a story in the Bible, recorded in Genesis. Abel was a shepherd, Cain was a farmer. They worshiped God together and each offered sacrifices to God. However, God only accepted Abel's sacrifice, not Cain's. Cain was so angry and jealous that he killed Abel. God rebuked Cain and announced his punishment, making him a fugitive. Cain thought that the punishment was too heavy and was worried that someone would come to avenge Abel. God gave Cain a mark as a warning to stop people from hurting him. This story revealed the sins of mankind and God's judgment, as well as the injustice of Abel and the consequences of Cain.
Well, it could be quite chaotic. Some characters might be outraged at how they are misrepresented in some fanfictions. For example, if a fanfiction made Alucard seem weak or cowardly, he would likely be very angry. On the other hand, some might find the creative interpretations of their relationships, like Trevor and Sypha's, quite amusing. But overall, it would be a very strange and disorienting experience for them as they are used to their own 'official' storylines.
There is no actual 'real story' in a literal sense for Kane and Abel. But in the fictional narrative, Kane is born into a wealthy family and has all the privileges that come with it. Abel, on the other hand, is from a poor background and has to struggle hard. Their upbringing makes a huge difference in their outlooks and approaches to life. Kane is used to getting what he wants easily, while Abel has to fight for every little thing.
The story of Cain and Abel is from the Bible. Cain and Abel were brothers. Cain became jealous of Abel because God favored Abel's offering, and Cain ended up killing Abel.