Perhaps a great Capaldi story is about his off - screen dedication to his craft. He spent countless hours preparing for his roles, researching and really getting into the minds of the characters he played. This dedication translated into some truly memorable performances.
One characteristic is the in - depth exploration of his character. Fan fiction often dives into the Doctor's complex personality, his moral dilemmas, and how he reacts to different situations. For example, it might focus on his more serious and brooding side compared to other Doctors.
One common theme is inspiration. Since Lewis Capaldi's music is so emotional and relatable, many fanfictions feature characters being inspired by his songs to pursue their dreams, whether it's in music or in other aspects of life.
Since I don't have first - hand knowledge of this fanfic, my best guess is that it could involve a situation or concept that is more 'blue' in nature compared to the TARDIS. Maybe it has to do with a different kind of blue - hued alien or a blue - tinted dimension that is explored in the story. It could also be a play on words, where 'bluer' refers to something other than the color, like a 'bluer' state of mind, and the story then weaves this concept in relation to the TARDIS, perhaps showing how this 'bluer' thing interacts with or is different from the TARDIS.
I'm not sure specifically as I haven't read this fanfic. But generally, if Harry is related to the TARDIS in a fanfic, it might involve some sort of crossover where Harry from the Harry Potter universe has an encounter or connection with the TARDIS from Doctor Who. It could be a really creative take on combining two very different fictional worlds.
Yes, there are likely some fanfictions out there with this concept. Fanfiction writers often come up with creative crossovers, and combining the magical world of Harry Potter with the time - and - space - traveling TARDIS from Doctor Who is a really interesting idea that some fans might have explored in their writing.
Obviously, Clara and the TARDIS are the main characters. Clara, with her inquisitive nature and strong will, and the TARDIS, the sentient time - space ship with its own mysteries.
A really interesting 'Doctor X Tardis' fanfic I've come across is 'Tardis Tales'. In this fanfic, the Tardis has a sort of consciousness that the Doctor tries to fully understand. It delves into the mystery of the Tardis' inner workings and how it has a connection to the Doctor on a deeper level than just being a ship. It's a short but engaging read that will make you look at the Doctor - Tardis relationship in a new light.