Their relationship could also develop through shared experiences. Say they go on a journey together in the fanfiction. During this journey, they face various challenges that force them to rely on each other. Ciel might learn to be more open with Elizabeth, and Elizabeth might become more confident in herself as she helps Ciel. This mutual growth can shape their characters in a more positive and complex way in relation to each other.
Ciel might start off seeing Elizabeth as just part of his obligation due to their engagement. But as time goes on in the fanfiction, he could start to notice her inner strength and kindness, which makes him develop deeper feelings for her. For example, if she stands by him during a difficult time, he'll see her in a new light.
It could make Sebastian, Ciel's butler, more protective. He might see Elizabeth as a potential weakness for Ciel, or he could also view the relationship as something that could be used to further Ciel's goals. For example, if there are other noble families involved, Sebastian could manipulate the situation based on Ciel and Elizabeth's new - found closeness.
Often, Lucy's kind - hearted nature helps Sting open up. He may have been a bit closed - off due to his past or his position in his guild. Lucy's warmth and understanding slowly break down his barriers. Meanwhile, Sting's boldness and confidence inspire Lucy to be more assertive in her own magic use and decision - making. Their relationship is a two - way street of character growth.
Their relationship can be explored through shared experiences with lemons. For example, they could discover a new lemon - flavored tea together and it becomes 'their' thing. This simple act can show how they bond over something new and different.
Ciel would likely become more cold - hearted. His experiences as a human, especially the trauma he endured, would be amplified by his new demonic nature. He might lose some of his remaining humanity, such as his sense of compassion.
They may also use the characters' backstories to drive the relationship. Ciel's past traumas and Alois' own troubled history can create a connection. For example, Ciel might see parts of his own pain in Alois, and this could be the starting point of empathy. As they share their experiences more, their bond grows stronger. Writers might also introduce external factors, such as other characters' reactions to their budding relationship, which can either help or hinder it. This all helps in the complex development of their yaoi relationship.
Their relationship begins with the contract. Ciel, in his quest for revenge, summons Sebastian. As time passes, Sebastian becomes an essential part of Ciel's life, protecting him from various threats. Ciel starts to rely more and more on Sebastian, and Sebastian is always by his side. They face many challenges together, which deepens their bond, though it remains a master - servant relationship based on the contract.
Perhaps a story where Elizabeth and Ciel time - travel back to a period before all the tragedy in Ciel's life occurred. Elizabeth could then try to prevent the events that led to Ciel's current state. This would involve her getting to know a more innocent Ciel and also dealing with the consequences of changing the past, such as how it might affect their relationship in the present.
In fanfictions, Ciel's character development can be shown through his growing understanding of the world of demons. As he spends more time with Sebastian, he may become more aware of the true nature of power and the cost of his revenge. His relationship with other characters also plays a role. For example, interactions with his servants might make him more empathetic or, in some cases, more callous as he tries to maintain his position of power.
A fanfiction could explore a different timeline where Ranmao becomes Ciel's bodyguard instead of Sebastian. This would lead to a whole new dynamic as Ranmao has her own unique skills and personality compared to Sebastian. She might be more impulsive in protecting Ciel, which could lead to some interesting situations.
A fanfiction could focus on how Ciel's eye affects his relationships. For instance, some might be afraid of it, while others, like Sebastian, might be intrigued. It could explore how his eye makes him both a target and a symbol of power among the various factions in the 'Black Butler' universe.