I'm not sure specifically what 'cause you're the only one 3 fanfic' is about as I haven't read it. It could be a fan - made story related to a particular work. Maybe it's about a unique relationship or an adventure where the main character is the only one in a certain sense. Without reading it, it's hard to say more.
As I don't know the exact Granton star cause story, it's hard to say its significance. But generally, if it's a local cause, it might be significant for the community of Granton in terms of bringing people together, or promoting a particular value like environmental protection or cultural heritage preservation.
I'm sorry, I haven't heard of the 'Granton star cause' specifically. It could be a very local or newly - created concept. Maybe it's related to something in the Granton area like a community project or an environmental initiative.
There are several factors that might contribute to the popularity of 'cause you're the onlyone fanfic'. Firstly, the sense of exclusivity that comes with the 'only one' theme can be very appealing. It gives a feeling of specialness to the story. Secondly, if the fanfic is set in a well - known fictional universe, fans of that universe are likely to be interested. They already have an emotional connection to the world and the characters, so seeing a new take on it like in 'cause you're the onlyone fanfic' can be exciting. Additionally, the writing style of the author matters a great deal. If the author can create a vivid and engaging narrative, with good pacing and dialogue, it will attract more readers.
The uniqueness of 'cause you're the only one fanfic' could lie in how it explores the relationship between the characters. Since it's centered around the concept of 'the only one', it might delve deeper into themes like loyalty, dependence, and the significance of that one special connection. It could also present a different perspective on love or friendship compared to other fanfics. For example, the relationship might be more intense or complex because of this unique premise.
I don't know the specific main characters since I haven't read the novel. But it could be the 'boy' mentioned in the title and someone who has a special connection to him.