The 'Owari no Seraph' full story is quite complex. It begins with a world overrun by vampires. Yuuichiro is a feisty and headstrong character who has a deep - seated hatred for vampires due to the loss of his family. He enters the military academy to gain strength. Mikaela, his friend, is turned into a vampire against his will. As the story progresses, we see Yuuichiro facing numerous challenges, both physical and emotional. He has to deal with the power dynamics within the military, the devious plans of the vampires, and his own internal conflict about saving Mikaela. There are also elements of a larger conspiracy that slowly unfolds, which ties in with the history of the vampires and their relationship with humanity.
One main plot point is the vampires' domination over humanity. Another is Yuuichiro's quest for revenge. Also, Mikaela's situation as a vampire is important.
One possible analysis could be that it allows for a more personalized take on the 'Owari no Seraph' universe. OC (original character) fanfictions often bring in new storylines and character dynamics. It might explore relationships between the existing characters in the series and the newly created OC in unique ways, such as a romantic relationship or a friendship that changes the course of the story.
It's mainly about the story in the 'Owari no Seraph' universe presented in a visual novel format. It likely involves the complex relationships between the characters, the battle against vampires, and the struggle for survival in a post - apocalyptic world.
One possible fanfic could be about Mika and Krul forming an unexpected alliance. Maybe they have to work together to face a common enemy that threatens both of their existences. In this story, Mika might start to see Krul in a different light, not just as a vampire but as someone with her own motives and desires.
One of the main themes is survival. The characters are constantly fighting for their lives in a post - apocalyptic world filled with vampires. Another theme is friendship and loyalty, as the characters rely on each other to face the numerous challenges. Also, there is a theme of revenge, especially for the main character who has a strong desire to take revenge on the vampires for what they have done to humanity.