One great Highschool DxD knight fanfiction is 'The Knight's Ascent'. It has an interesting plot where the main character, a newly turned knight, has to overcome various challenges in the DxD universe. The story is well - written, with great character development.
Issei would probably be the first to want to fight Thanos. He's always eager to prove himself and protect his friends. He might initially underestimate Thanos due to his own growing power and confidence, but soon realize how powerful Thanos really is. Rias would be more cautious. She would likely try to gather information about Thanos first and then formulate a plan to either fight or negotiate with him.
Issei, being the hot - blooded character he is, would probably be excited to meet someone as powerful as Naruto. He might challenge Naruto to a friendly spar at first, hoping to learn from him and test his own strength. And as he gets to know Naruto better, he could start to see him as a brother - in - arms, especially if they face common enemies together.
Well, for one, it gives readers a chance to explore different character arcs. In these fanfictions, knights can be developed in ways that might not be possible in the original series. They can have their own storylines, relationships, and growth. Also, the battles and conflicts that knights get involved in are often more focused on their knightly skills and values, which is really interesting to read about. For example, a knight might have to face a powerful devil while upholding his code of honor, and that creates a really engaging narrative.
One interesting 'Type Moon Highschool DxD Fanfiction' could be 'The Crossover Chronicles'. It combines the unique elements of both universes in a really engaging way. The characters from Type Moon and Highschool DxD interact in unexpected scenarios, which makes for a great read.
One common theme is the power struggle. Since both Type Moon and Highschool DxD have characters with various powers, fanfictions often explore how these powers interact and who would be the most powerful when the two universes collide. Another theme is friendship. Characters from different backgrounds in the two universes form unexpected friendships.
Rias would be devastated. Issei was not only her servant but also someone she had deep feelings for. She would likely go into a rage at first, vowing to find and punish whoever was responsible. Akeno would be heartbroken as well. She and Issei had a special bond, and she would be in mourning for a long time. Kiba might feel a sense of guilt, wondering if he could have done more to protect Issei. Asia would be in shock and constantly pray for Issei's soul, hoping for some kind of miracle.
Issei would probably be both scared and excited. He's used to dealing with powerful beings, but the Ghost Rider is on a whole different level. He might initially try to fight him out of bravado, but soon realize he's outmatched. Rias would be more cautious. She would see the Ghost Rider as a potential threat to her peerage and would try to figure out his motives before taking any action.
A prevalent theme is also crossovers. Since it's a fanfiction combining Highschool DxD and Magic Knight, there are a lot of crossovers where the worlds and rules of the two series interact. For example, the magic systems of Magic Knight might be incorporated into the world of Highschool DxD, creating new and exciting storylines. And of course, the theme of adventure is also common as the characters embark on various quests and battles.
Some Avengers might be suspicious. For instance, Captain America, who values order and loyalty, might be cautious about Moon Knight's erratic behavior. Iron Man, on the other hand, could be intrigued by Moon Knight's technology, especially if it has any connection to his lunar - based powers. Thor might see him as an interesting mortal with a connection to a different kind of divinity compared to his Asgardian gods.