Actually, it could be 'me'. 'Me' might be the narrator or the one with the most complex emotions. 'Me' could be the one who has to make the toughest choices in the love triangle, which would make 'me' a very important character in the story.
It might be 'you'. Maybe 'you' are the one who initiates the love or causes the most significant changes in the relationships. 'You' could be the catalyst for all the events in the story.
I think 'her' could be the most important. Since it's a love story, often the object of the love, in this case 'her', drives the plot. Everyone's actions revolve around her.
The main theme might be self - discovery. Through the relationships with 'you' and 'her', 'me' could be on a journey of understanding my own feelings, desires and what I really want in a relationship. It could also be about learning to share love and accept different forms of relationships.
The angels are important too. They were the messengers who told everyone about Jesus' birth. Without them, the shepherds wouldn't have known, and the story might not have spread as it did. They brought the news of great joy, which is a big part of the Christmas story.
It could be the jilted lover. The one who was left broken - hearted and is now full of rage and a desire for revenge.
Well, it's hard to say just one. But in some of his works, the older, wiser characters who pass on their knowledge and experiences are crucial. For example, in certain stories, an old farmer or a grizzled townsperson who has seen the town's evolution and has a story to tell. They often hold the key to understanding the deeper meaning of the novel.
I'm not sure who the main character is without more details. It could be her, of course.
The seventh man himself is the most important. Because the whole story revolves around his experience, his guilt, his fear, and his journey of self - discovery.
Not having read the 'Phyllis Story', it's a fair bet that Phyllis is the central character. In many stories, the character the story is named after is the most important. They are usually the focus of the plot, the one whose actions and decisions drive the story forward. Other characters may exist to support or oppose Phyllis, but she would be at the heart of the narrative.
Luffy will surely be the most important. He is the main character and his journey to find One Piece has been the central plot all along.
It has to be Conan himself. After all, the whole story has revolved around him. His journey to take down the Black Organization and his relationship with Ran are the two main threads that need to be resolved in the ending.
Probably the man who corrupts Hadleyburg is the most important. He drives the plot forward. He is the one who devises the plan to expose the town's false sense of morality. Without him, the whole story of the town's downfall and the revelation of its people's true natures wouldn't happen. All the other characters' actions are reactions to what he sets in motion.