One interesting headcanon could be about the backstories of the Servants. For example, there might be a headcanon that a certain Servant had a secret friendship in their past life that influenced their character in the game. Another could be related to the magic system in the Fate Grand Order universe, like a unique way of casting spells that isn't shown in the main story.
" The Second Season of Ushijima-kun Okini " was a Japanese drama based on the manga of the same name by Manabe Shohei. The drama told the story of how the president of CowCowFinance, Ushijima Kaoru, and his assistants collected debts in a decadent and materialistic era. The plot of the second season continued to revolve around Ushijima and his team. They faced all kinds of people who tried to squander money but were unwilling to pay their debts. They used various means to collect debts. In addition, Ushijima Kaoru also had a classmate who was an intelligence expert, Suyosuke. Together, they revealed all kinds of secret information in society. The second season consisted of nine episodes and was released in 2014.
Well, a popular headcanon is that Percy can see the memories of the ocean. So in fanfiction, he might touch an old piece of coral and suddenly be flooded with images of ancient sea battles or long - lost civilizations. Also, some think that Annabeth has a fear of heights that she hides really well because she doesn't want to seem weak. As for Grover, perhaps he has a family of satyrs in a hidden grove that he secretly visits and they tell him old satyr tales that he then uses to his advantage on quests.
The contrast between their personalities. Ushijima is calm and collected, while Hinata is energetic and impulsive. This creates a dynamic that can lead to really engaging storylines in fanfics.
Well, in Haikyuu fanfiction about Ushijima and Shirabu, a common theme is the respect they have for each other. Ushijima respects Shirabu's setting skills, which are crucial for his spikes. Shirabu, on the other hand, admires Ushijima's unwavering dedication to the sport. This mutual respect can sometimes develop into a deeper bond. For example, in some stories, they might have heart - to - heart conversations about their dreams and insecurities related to volleyball, which strengthen their relationship both as teammates and as friends.
A popular trope in these fanfictions is 'Unspoken Understanding'. Ushijima and Shirabu seem to have an unspoken connection on the court, and fanfictions often explore this further. For example, with just a look, they can anticipate each other's moves. Another trope is 'Jealousy'. There could be a situation where Shirabu is jealous of the attention Ushijima gets, or vice versa, which adds an interesting layer to their relationship. And then there's the 'Secret Admirer' trope, where one secretly admires the other's skills or qualities, which can lead to a cute and sometimes slow - burn kind of relationship development.
One common theme is rivalry. Given their positions as volleyball players, many fanfictions explore how their on - court rivalry can translate into a different kind of relationship off the court.
I like the headcanon where Annabeth is a master of disguise. In fanfiction, she can blend into any crowd, not just because of her intelligence but also because she has some magical items that help her change her appearance. It makes her even more resourceful on quests. Grover, on the other hand, has a headcanon where he can grow plants with just a touch. So if they're in a barren area, he can create a little oasis for them to rest in. This shows his connection to nature in a more powerful way.
One idea could be that Neville Longbottom is secretly a powerful wizard all along but has been suppressing his power due to self - doubt. Another could be that the Hogwarts portraits have their own little society and gossip network within the castle walls. And a third one might be that Hagrid has a secret family of magical creatures in the Forbidden Forest that he takes care of.
There's a fanfic called 'The Bond Beyond the Net' which is really good. In this story, Ushijima and Hinata find themselves in a training camp together. Their different playing styles clash at first but then they start to learn from each other, leading to a deep friendship and more. It shows how their characters complement each other in unexpected ways.