Well, first of all, communication is key. The Avenger and the OC need to have honest conversations. If Black Widow is the 'parent' to the OC, she might share her own past traumas with the OC, which makes the OC feel closer to her. Secondly, showing vulnerability. Let's say Thor is the 'parent'. He could show the OC his doubts about being a worthy king, and the OC could comfort him. This creates a deeper connection. And thirdly, working towards a common goal. If Hawkeye is the 'parent', he and the OC could work together to take down a group of bad guys, which forges a strong relationship.
To develop the relationship, start with small moments of trust. For example, if Iron Man is the 'parent' to the OC, he could start by sharing some of his tech secrets with the OC. This shows that he trusts the OC. Another way is through shared experiences. If Captain America is the 'parent', they could train together. This builds a bond. Also, having the Avenger protect the OC in a dangerous situation can strengthen their relationship.
You can start with them having a bit of a rocky start. Maybe Alex is too brash for the OC's liking at first. But as they face challenges together in Jumanji, they start to see the good in each other. For example, Alex's courage impresses the OC during a fight with a game - created monster, and the OC's intelligence helps them solve a difficult puzzle, earning Alex's respect.
First, create shared experiences. For example, put them in a dangerous mission together. Second, give them common interests like a love for a certain type of jutsu or a passion for helping the village. Third, show how they support each other through difficult times, like when the OC is having trouble with her training and Shisui helps her out.
You can start by having them meet in an unexpected situation. For example, the OC could be in trouble and Kitty Pryde comes to their rescue. This creates an initial connection. Then, give them common goals. If they both want to stop a certain villain, they'll have to work together and that will bring them closer.
To develop their relationship, start with small interactions. For example, the OC could save Halibel from a surprise attack by other Hollows. This would make Halibel curious about the OC. Then, have them exchange stories about their lives. Halibel could talk about her rise to become an Espada and the OC could share their origin story. Another way is to give them a common goal, like protecting a group of innocent Hollows from a cruel Arrancar. Working together towards this goal would bring them closer.
To develop their relationship, start with misunderstandings. Let the OC misinterpret Toyohisa's brash behavior at first. Then, as they get to know each other better, they start to see the real person behind the facade. Have them have deep conversations about their pasts, their hopes, and fears. Also, physical contact can play a role. A simple touch on the arm during a tense moment can be the start of something more. And don't forget about conflict. Maybe the OC's pacifist views clash with Toyohisa's warrior ways, but they learn to respect each other's differences.
The relationship can be developed by exploring their backstories. If the OC has a tragic past related to pirates, Zoro can relate to it in some way. His possessive attitude can be seen as him trying to prevent the OC from going through more pain. They can also have shared interests like a love for a certain type of food or a particular island's scenery. By focusing on these commonalities and delving into their pasts, the relationship between Zoro and the OC can be richly developed.
Start with small interactions. For example, they could exchange simple greetings in OZ. Then gradually, have them team up for small tasks in the virtual world, like competing in a mini - game. This will build a sense of camaraderie.
In a 'Percy Jackson and a OC love fanfiction', you could also use the element of sacrifice. Let's say the OC is in danger of being captured by a powerful enemy. Percy risks everything to save her. This act of selflessness makes the OC see Percy in a new light. On the other hand, the OC could also sacrifice something for Percy, like giving up a chance to go back to her old life in order to stay with him at Camp Half - Blood. These sacrifices deepen their connection and lead to a stronger, more loving relationship.
Start with small interactions. For example, if the OC is a kind neighbor, they could offer Ame some home - baked cookies. This simple act can start a friendly connection. Then gradually introduce more complex situations like when Ame gets into trouble in his wolf form and the OC helps him out without asking too many questions at first.
First, give him a clear backstory. For example, if he has superpowers, explain how he got them. Was it an accident, genetic, or something else? Second, give him flaws. He can't be perfect. Maybe he's too impulsive or has a fear of heights which can create interesting situations in battles. Third, give him relationships. He could have a family member he's trying to protect or an old friend who has turned bad.