First, let there be a common goal. Say they both want to protect a particular place or person. This gives them a reason to be together often. During their time together, the OC male Saiyan can show his softer side to Android 18. Maybe he has a love for nature that she discovers. In turn, Android 18 can show her intelligence and strategic thinking to the Saiyan. They can have arguments too, about things like morality and power use. But through these arguments, they learn more about each other and grow closer. Another aspect is physical touch. A simple touch on the shoulder during a tense moment can start to build that romantic connection.
To develop their relationship, start with small interactions. For example, they could exchange fighting techniques. This would allow them to see each other's strengths and respect each other. Then, put them in situations where they have to rely on one another, like being trapped in a dangerous place. As they work together to escape, their bond will grow. Also, have them share their pasts. The Saiyan can talk about his Saiyan heritage and Android 18 can share her experiences as an android. This will create a deeper understanding between them.
The Saiyan male OC can be developed by giving him a moral code. For instance, he might believe in always fighting fair and never using dirty tricks. This can contrast with Kale who, in her Berserker state, might not be as in control. As for Kale, you can develop her character by showing how she adapts to new situations. When the OC introduces her to new Saiyan traditions or places, how does she react? Does she embrace them or is she hesitant? Their characters can grow as they influence each other. The OC can inspire Kale to be more confident in her normal state, and Kale can teach the OC about the raw power that lies within a Saiyan when pushed to the limit.
One plot idea could be that the OC male Saiyan is initially at odds with Android 18. Maybe he's on a mission to stop her from causing chaos, but as they interact more, he realizes she's not as bad as he thought. Another could be that they team up to face a common enemy, like a powerful new villain threatening the Earth. And they gradually develop feelings for each other during the battles and shared experiences.
Communication is key. Have the male OC and Wonder Woman share their stories, dreams, and fears. For example, the OC could tell Wonder Woman about his life back home, and she could share her tales of Themyscira. This will help them understand each other on a deeper level and strengthen their bond.
Their relationship might start with Hanabi being curious about Naruto's Saiyan abilities. As she gets to know him better, she starts to admire his strength and determination. Naruto, on the other hand, is drawn to Hanabi's grace and her own hidden strength. They could start training together, which would bring them closer as they learn from each other.
At first, Saiyan Naruto and Bulma might be at odds. Naruto is used to his own world's way of doing things and Bulma might find Naruto's Saiyan nature a bit wild. But as they face challenges together, like dealing with powerful villains or exploring new places, they would start to rely on each other. Naruto's strength and determination would impress Bulma, and Bulma's intelligence and ability to come up with solutions would earn Naruto's respect. Over time, this could develop into a deeper relationship, perhaps even a romantic one.
For making their relationship believable, you should show the development gradually. For example, if it's a friendship, start with small interactions like sharing a meal or a common interest. If it's a romantic relationship, let them first get to know each other's personalities. The OC should respect Android 21's nature, whether it's her fighting side or her more gentle, food - loving side. Also, have them face challenges together that strengthen their bond.
Their relationship can develop through mutual respect. Gohan respects Android 21's strength and intelligence, while Android 21 respects Gohan's kind heart. This respect can turn into friendship first. For example, they train together, learning from each other's fighting styles. Then, as they spend more time together, they start to notice little things about each other that they like, which gradually leads to a romantic relationship.
To develop their relationship realistically, start with small interactions. For example, have them meet at a local coffee shop in Inaba. The male OC could accidentally spill his drink on Rise, and he apologizes profusely. This simple encounter can be the start of them getting to know each other. Then, gradually build on their conversations. Maybe they find out they have common interests like a love for a certain type of music.
Another aspect could be cultural or family - related. If the male OC has a unique family background or cultural heritage within the Attack on Titan world, it could intrigue Mikasa. He could share stories about his family's traditions, and Mikasa, who has lost most of her family, might be drawn to the sense of family that the male OC represents. This could be the starting point of a relationship where they find comfort in each other's presence.
To develop their relationship realistically, start with their initial meeting. If the male OC is from a different background, there should be some level of distrust or misunderstanding at first. For example, if he's from a poorer region and she's a Lannister, she may look down on him. As they interact more, small acts of kindness or shared interests can start to break down the barriers. For instance, if they both have a love for a certain type of horse, it can be a starting point. Their relationship should also be affected by the political climate around them. If Cersei's power is threatened, she may be more hesitant to show affection for the male OC for fear of looking weak.