There's no way to know for sure who the main characters are in this fanfic just from the title 'let my love open the door fanfic'. It could feature well - known characters from a popular series, or it could be an original take on a less - known story. The main characters could be people with special abilities, or just ordinary individuals whose love has extraordinary power. It all depends on the creativity of the author of this fanfic.
Well, without having read it directly, it could be a fanfic that uses the idea of 'let my love open the door' as a central theme. Maybe it's about a character using the power of their love to break through barriers, like a physical door that's locked or a more symbolic one such as the door to acceptance in a community within the story's universe. It could also be a romantic take on a character's journey, where their love is the driving force that enables them to access new places or relationships.
I don't know the exact main characters in this particular story without more details. It could be the people who live in the haunted place with the open door.
I'm not sure as I haven't read the specific 'the open door short story', but it could be a young adventurer who is drawn to the open door, seeing it as a chance for something exciting.
Obviously Naruto would be one of the main characters since it's a Naruto - centered fanfic. Sakura might also be a key character, perhaps she helps Naruto in his journey of letting go. And Sasuke could be involved too, as his relationship with Naruto is so central to the Naruto series.
I don't know as there is not enough information. It could be two lovers, perhaps named something like Emily and James. Or it could be a single - sided love story with a main character who loves someone who is unaware or indifferent.
Maybe a young woman who lives in a house and the male ghost next door. The woman could be curious about the strange happenings in the neighboring house which are caused by the ghost, and that could be the start of their relationship.
Another option is to have Hinata and Numbuh Three as the main characters. Hinata's shyness and her growth in Naruto could be paralleled with Numbuh Three's own journey of self - discovery in the KND. They could support each other and show different aspects of courage in the face of challenges.
Well, it could also be about the theme of discovery. The open door is like an invitation to discover what lies beyond. It might lead the protagonist to discover things about themselves, their world, or other people. For example, they might find a hidden part of their personality as they step through the open door in the story, or they might uncover a secret about their society.
There could be a curious child as one of the main characters. This child is always exploring and it's their inquisitiveness that leads them to the secret door.
Since I don't know the exact 'door man story', it could be the doorman himself as the main character. There might also be some regular visitors like a kind old lady or a busy businessman who interact with him a lot.