Their relationship can be developed through shared experiences. For example, when they face a dangerous dragon together, they learn to trust each other more. They can also have deep conversations during their travels. Maybe Ryuji shares his dreams and fears with Rose, and she does the same. This mutual sharing can bring them closer.
One interesting plot idea could be that Rose and Ryuji have to go on a quest to find a rare dragon egg that is said to hold the key to saving their world from a dark magic that is slowly spreading. Another could be that they get separated in a strange dragon - infested land and have to find their way back to each other while facing various challenges. Maybe a plot where Rose discovers a new power within herself and Ryuji has to help her control it before it consumes her, all while dealing with dragon attacks and political intrigue in their dragon - filled world.
Communication is key. They could start by simply learning each other's languages. The dragon might initially be seen as a fearsome beast, but as it starts to communicate with the girl, she realizes there is a gentle and intelligent being inside. They could then have long conversations about their dreams, fears, and the world around them, which would bring them closer.
Another way is through misunderstandings at first. Let's say Shadow Lemon accidentally breaks something that is important to Amy Rose. Amy Rose gets angry, but then they both realize it was a misunderstanding. This kind of situation can lead to better communication and understanding between them later on.
One way is to have them go through a life - or - death situation together. This could make them bond more deeply as they rely on each other for survival.
They might develop their relationship through shared experiences. For example, if they both get lost in an uncharted area, they have to rely on each other to survive. The half - dragon could use its natural instincts to find food and shelter, while Hiccup uses his intelligence to figure out how to get back home. This mutual dependence would strengthen their bond. Also, they could communicate through body language and simple sounds at first, gradually developing a deeper understanding of each other as time passes.
Their relationship can be developed through shared adventures. For example, if they go on a quest together to retrieve a powerful artifact. During this journey, they have to rely on each other's skills. Cid's combat and strategic skills combined with Rose's knowledge of the local area or certain magic can bring them closer. They start to respect each other more, which is the first step in developing their relationship.
A shared adventure where they save each other's lives would deepen their bond. Like if they are exploring an ancient ruin and Gunther is about to be crushed by a falling stone, Jane uses her quick thinking and strength to save him. Then later, Gunther returns the favor when they are attacked by some magical creatures. This kind of mutual life - saving would make their relationship more profound.
The relationship can start with mutual distrust. For example, the female dragon might see Jaune as a threat at first, and Jaune is scared of the dragon. But as they are forced to work together to escape a common enemy, they begin to understand each other better.
The relationship should start with some sort of interaction that is not love at first sight. For example, the dragon might kidnap the princess for a reason that is not related to love, like to use her as a bargaining chip. But during their time together, they start to understand each other's motives and personalities. This can lead to a gradual development of feelings.
Their relationship can be developed through shared experiences. For example, they could be on a mission together where they have to rely on each other's strengths. Gajeel's physical power and Levy's intellectual power would complement each other, and this would lead to a deeper understanding and respect between them.