One common theme is friendship. They often form a strong bond in the fanfics. Another theme could be growth, as they both develop as characters through their interactions.
Well, 'Ayato and Hinami's Journey' is also a wonderful fanfic. It delves into their individual characters and how they come together. The author does an excellent job of portraying their personalities. You get to see Ayato's more protective side towards Hinami, and Hinami's influence on Ayato to become a better person. There are many heart - warming scenes that will keep you engaged throughout the story.
There's 'Unlikely Allies' which is a great 'kaneki ken x hinami fanfiction'. It delves into how they support each other during difficult times. The story is full of emotional moments and their interactions are very well - written.
To develop their relationship, start with small moments of interaction. For example, Ayato could save Hinami from a dangerous situation, which would be the first step in building trust. Then, have them share their past experiences. Ayato could talk about his family and his struggles, and Hinami could do the same. This would make them understand each other better. Another way is to put them in a common goal - oriented situation, like working together to protect a group of weaker ghouls. Through this, they would see each other's strengths and weaknesses and grow closer.
One idea could be a story where Ayato and Hinami are forced to team up on a dangerous mission. They start off distrusting each other, but as they face various challenges together, they gradually develop a mutual respect and friendship. For example, they might have to infiltrate a powerful ghoul organization's hideout. Another plot could be set in a post - apocalyptic Tokyo where they are among the few ghouls left and have to find a way to coexist with the remaining humans. Ayato's tough - guy attitude and Hinami's more gentle nature could create interesting dynamics throughout the story.
In 'Dragon Ball Z', there are characters like Frieza who can have flaming eyes when they exert intense energy or get angry. It adds to the intensity of the scenes.