It could also be due to jealousy. If Twilight was getting more attention from the other ponies in Equestria because of her latest achievements, Celestia might feel a bit jealous. This would be an interesting twist in the fanfic as it goes against the normal relationship we expect between them. However, this would require a very creative and perhaps darker take on their characters.
One possible reason could be a misunderstanding. Maybe Twilight accidentally disrupted some important plan of Celestia's. For example, if Twilight was experimenting with a new spell and it had an unexpected impact on Celestia's castle or a major event she was organizing.
Perhaps Twilight overstepped her boundaries in some way. She is a very powerful unicorn, but Celestia is the princess. If Twilight started making decisions without consulting Celestia, like matters regarding Equestria's governance, that could make Celestia angry. In the world of fanfic, the writer might explore this power dynamic in an interesting way.
It could strain their relationship significantly. Celestia might start to distance herself from Twilight. For instance, she could stop inviting Twilight to important meetings or events, which would make Twilight feel left out and confused.
Another reason could be if someone were to slander or disrespect his late mentor, like Iruka or Jiraiya. Naruto holds these people in high regard, and any negative remarks or actions towards them would likely enrage him.
Twilight sleep in fanfic can be a fascinating concept. It might symbolize a transition or a state of limbo for the characters. Teleportation, on the other hand, is a cool mechanic that can bring in a lot of action and adventure. When it comes to Celestia, if it's a place, it could be a destination full of wonders. In a fanfic, a character could experience twilight sleep and then be teleported to Celestia, where they encounter new species and magical phenomena.
One common theme is mentorship. Celestia is often Twilight's mentor, so the fanfics explore how Celestia imparts knowledge and wisdom to Twilight. Another theme is friendship. Despite their different positions, they form a deep friendship which is often depicted. And power is also a theme, like how Twilight grows in power with Celestia's guidance.
A 'yandere' character in a fanfic is often possessive and extreme in their love or obsession. In a 'yandere Celestia and Twilight fanfic', Celestia being a yandere could mean she has an over - the - top, perhaps even dangerous, love for Twilight. This could lead to complex power dynamics as Celestia is often in a position of authority. Twilight, on the other hand, might be the object of Celestia's affections, and have to deal with the consequences of such intense feelings. It could also explore themes like loyalty, friendship, and how far one would go for love in the context of the My Little Pony universe.
One common theme is possessiveness. Since Celestia is a yandere, she will be extremely possessive of Twilight. Another theme could be the power imbalance. Celestia has more power and authority, and this can create a complex situation when combined with her yandere nature. Love in an extreme form is also a theme. It's not a normal, healthy love but rather an obsessive one that can drive the plot.
Another reason could be related to school work. If there are new rules in Hogwarts that she deems unfair regarding academics, like restrictions on library access or new grading systems that don't reward hard work properly. Hermione is all about learning and fairness in education, so this could really make her angry.
One popular 'twilight x celestia fanfic' could be 'The Meeting of Two Realms'. It explores how Twilight from her world and Celestia from another might interact in a unique magical setting.
I'm not sure specifically which ones are the 'good' ones as lemon fanfics often involve inappropriate content. It's better to focus on non - lemon fanfics. For example, there are many fanfics that explore their friendship or adventures in a more positive and family - friendly way.
Often, you'll find themes like legacy. Since Celestia has such a long and important history in Equestria, Twilight has to deal with the expectations that come with being her daughter. Also, friendship still plays a role as Twilight's friends react to this new situation, adding a layer of complexity to their relationships.