Love is also a very common theme. Fanfic writers love to explore the romantic side of their relationship. They might start with a slow - burn romance, where the characters are initially unaware of their feelings, and then gradually fall in love in a heart - warming way.
One common theme is friendship. They often start as friends or rivals and then develop a deeper bond. For example, in many fanfics, they first compete in some activity and then realize they have more in common than they thought.
Another theme is growth. Tory and Robby are usually depicted as growing both as individuals and in their relationship. This can be through facing challenges together, like dealing with family issues or school problems.
One common theme is rivalry. Since they are both skilled in martial arts, many fanfictions play on their competitive nature towards each other.
A great 'tory x robby fanfic' that I've come across is 'The Hidden Feelings'. It starts with a rather tense situation between them and then gradually unfolds their true emotions for each other in a very engaging manner.
Friendship is a very common theme. Many fanfics explore how Robby and Hachi's friendship grows and endures different situations.
One common theme is redemption. Since Robby has had his share of missteps, many fanfics focus on his journey to redeem himself and gain back the trust of those he has wronged.
One popular Tory and Robby fanfiction could be about their adventures together in a martial arts tournament. Maybe they team up against a common rival and their relationship deepens through the challenges they face.
You can try fanfiction websites such as Archive of Our Own (AO3). It has a large collection of fanfictions from various fandoms, so there's a good chance you'll find Tory and Robby fanfiction there.
One popular storyline could be Robby and Tory teaming up to face a common enemy within the karate world. Maybe an old rival from another dojo who has a vendetta against Cobra Kai. They put aside their differences and use their combined skills to protect their dojo.
One great Robby and Tory fanfiction is 'Robby and Tory's New Beginning' which explores their relationship as they train together and overcome challenges. It shows their growth as characters.
One common theme is redemption. Given his complex backstory in the show, many fanfictions explore his journey towards redemption. They might have him making amends for past mistakes and becoming a better person.
Love is a very common theme. Most fanfictions explore the romantic relationship between Acheron and Tory, showing how they fall in love and overcome obstacles in their relationship.