One common theme is Saiki's struggle with his powers. In many fanfics, he tries to hide his psychic abilities from others while still having to use them at times, which leads to comical and tense situations.
Friendship is also a big theme. Fanfics often explore how Saiki, who is rather aloof, forms bonds with his classmates. For example, his relationship with Nendo and Kaido is a popular focus, showing how they gradually understand and accept each other.
One common theme is the reader having some sort of special relationship with Saiki. It could be a friendship or a romantic relationship. For example, the reader might be the only one who truly understands Saiki's powers and they form a deep bond.
One common theme is the exploration of their unspoken feelings. Since in the original anime there's a lot of unexpressed emotions between them, fanfics often delve into how they might come to terms with their feelings for each other.
One common theme is the reader character having special powers or abilities that interact with Saiki's powers in interesting ways. For example, they might be able to nullify his telepathy accidentally.
One common theme is friendship. Since Saiki has a group of friends in the original show, fanfictions often explore their relationships deeper. Another theme is power management. Saiki has to constantly hide his powers, and fanfictions might show different ways he has to deal with that in new situations.
One common theme is the discovery of self. The OC often comes into Saiki's world and through their relationship, both characters learn more about themselves. Another theme is friendship. Despite Saiki's initial reluctance, a friendship forms which is central to many stories.
Another theme is the idea of Teruhashi trying to break through Saiki's emotional barriers. Since Saiki is often aloof, Teruhashi's attempts to get closer to him form a major part of many fanfics. It can be really entertaining to read how she tries different strategies to get his attention.
Yes, there is a Saiki K manga. It's quite popular among fans of the series.
In 'The Disastrous Life of Saiki K Novel', a significant theme is acceptance. Saiki has to accept his powers, even though he doesn't really want them. At the same time, those around him unknowingly have to accept his strange behavior sometimes. Another theme is the power of the individual. Saiki's powers are extremely powerful, but he still has to deal with personal problems and emotions like any normal person. The novel also has a theme of family, as his family members, while a bit odd, are an important part of his life and the story.
One challenge is staying true to Saiki's character. He's very stoic and doesn't like to get involved in unnecessary things. So when writing with a female character, it's hard to make their interactions seem natural without forcing Saiki to be too out of character. Another challenge is creating a unique female character. There are so many existing characters in the Saiki K universe that it can be difficult to come up with a new one that stands out.
Yes, it is. The Saiki K manga has completed its run.