Perhaps by introducing a time - travel element. Kaneki could go back in time and meet a younger Hide. This would give him the chance to protect Hide from the hardships he faced in the original timeline and also allow them to form an even deeper bond. It could also lead to changes in the overall Tokyo Ghoul story.
Their relationship could be developed in a unique way by having Hide become a ghoul. This would completely change the power dynamic between them and force them to re - evaluate their friendship. They would have to learn to understand each other from a new perspective, as Hide now experiences the same struggles as Kaneki.
One idea could be a post - apocalyptic scenario where Kaneki and Hide are trying to survive in a world that has become even more hostile to ghouls. They could be on a journey to find a safe haven, relying on their deep - seated friendship and Hide's unwavering loyalty to Kaneki. Along the way, they face various challenges that test their bond.
Self - acceptance is a very prevalent theme. The two Kanekis need to come to terms with their own existence and their relationship with each other. Identity crisis is also common. They both represent different aspects of Kaneki's identity and the fanfic often explores how to reconcile these different identities. Additionally, the theme of power and control can be seen, as they may fight over who gets to be in control in certain situations.
One possible fanfic could be about how Rize and Kaneki's relationship evolves in a world where they manage to overcome their differences. Maybe they start to understand each other's pain and loneliness, which were deeply rooted in their ghoul and half - ghoul existences respectively.
I've heard of a fanfic named 'Eyes of the Self'. In this one, the two Kanekis are constantly at odds, yet they also have a deep understanding of each other. It's really well - written, with great descriptions of their internal battles. There's also a fanfic that's more action - oriented called 'Battle of the Kanekis' where they fight against a common enemy while also dealing with their own relationship. And 'The Kaneki Bond' is a heart - warming fanfic that shows the bond between the two Kanekis growing over time.
Many Kaneki x Tsukiyama fanfics also tend to be set in the dark and gritty world of Tokyo Ghoul. The setting adds to the overall atmosphere of the relationship. The fanfics might include elements like their interactions within the ghoul society, their battles together or against each other, and how these experiences shape their relationship. For example, a fanfic could show how they bond over a shared enemy or a difficult situation in the ghoul underworld.
The theme of friendship in the face of adversity is quite common. They are in a world full of conflict between ghouls and humans, yet they form a connection. There's also the theme of sacrifice. In some fanfics, one may sacrifice for the other to uphold their new - found relationship or to protect the greater good in the Tokyo Ghoul universe.
One common theme is the exploration of their complex relationship. Given their different personalities and backgrounds within the Tokyo Ghoul universe, fanfics often focus on how they interact, whether it's a love - hate relationship or a gradual understanding and acceptance.
Love and acceptance are very common themes. Given that Kaneki is a half - ghoul and Touka is a full ghoul, their relationship often explores how they accept each other's differences.
One popular 'Tokyo Ghoul Tsukiyama x Kaneki' fanfic is 'A Different Kind of Bond'. It explores their complex relationship in a post - apocalyptic Tokyo. The author delves deep into their psychological states, showing how they rely on each other in unexpected ways.
I really like 'Kaneki's Female Companion'. In this fanfic, the female character has a unique backstory that intertwines with Kaneki's. It shows how their relationship develops in the dark and dangerous world of Tokyo Ghoul. The author does a great job of keeping the essence of the original Tokyo Ghoul while adding their own creative twists.