One interesting aspect is the complex character of Merlin. His mysterious powers and his role as a guide in the story add depth. Another aspect is the unique magic system depicted, which is different from typical magic in other novels. Also, the relationships between the characters, especially those involving Merlin, are full of intrigue.
The unique alien cultures are often interesting. In many 'aliens light novel', they create elaborate and distinct cultures for the alien species, like different languages, social structures, and values.
Merlin is obviously one of the main characters. He is a powerful wizard with great influence. Then there's probably Arthur, as it is related to Arthurian legend. There might also be other knights or magical beings that play important roles in the story.
The main character, who is also a Master in the Holy Grail War, is interesting as well. He has to navigate through the dangerous and complex world of the Grail War, dealing with the powerful Servants and other Masters. His growth throughout the story, from being a relatively inexperienced person to someone who can hold his own in this cut - throat world, is a great aspect of his character.
I think Mordred is quite interesting. She is King Arthur's 'son' and has a complex relationship with her 'father'. Her rebellious nature and strong combat abilities make her stand out. Another interesting one is Jeanne d'Arc. She plays a crucial role in the story, trying to bring some sort of balance between the warring factions.
Kiritsugu Emiya is quite interesting. His cold - blooded yet ultimately well - intentioned approach to the Grail War sets him apart. He's willing to do whatever it takes to win, even if it means using morally ambiguous tactics. Another is Gilgamesh. His arrogance as an ancient king and his overpowering abilities make him a captivating character. And then there's Saber, with her sense of honor and the internal conflict she has between her past as a king and her current role as a Servant.
One of the most interesting aspects is her power. It makes her stand out.
One interesting Fate Merlin fanfiction could be about Merlin guiding a young and inexperienced mage in the modern Fate universe. This could involve him using his ancient magic knowledge to help the new mage face challenges.
The story's exploration of love and friendship is great. It shows how love can grow between two people who seem so different at first. Also, the friendships in the story add depth and realism to the overall plot. It's not just about the romantic relationship between the two leads.
The 'danmachi light novels' are interesting because of their take on the adventure genre. They combine elements of Greek mythology with a modern - day fantasy setting. The story is full of action - packed battles against various mythological creatures. The different familias and their leaders also bring a political aspect to the story, making it more complex and engaging.
Saber is one of the most interesting characters. Her complex backstory as King Arthur, a female in a male - dominated role, and her struggle with her ideals of kingship make her stand out. Another interesting character is Gilgamesh. His extreme arrogance and his view of himself as the ultimate being are fascinating. He also has a deep understanding of power and the nature of the Grail War.