Another way is through friendly rivalries. They could constantly challenge each other to improve their quirks and hero skills. For example, they set up little competitions like who can save the most civilians in a mock disaster scenario. This would not only make them better heroes but also bring them closer as friends as they learn from each other's strategies.
In fanfiction, they might go on joint missions together outside of school. During these missions, they face various challenges that force them to trust each other completely. For instance, when they are up against a powerful villain, Izuku might be in a tight spot and Shoto has to use his quirks precisely to save him. This kind of life - or - death situation would strengthen their relationship.
In fanfiction, their relationship could develop through a common enemy. Suppose a new, powerful villain emerges who threatens both Toga's goals as a villain (in her own twisted way) and Izuku's mission to protect. They might be forced to team up against this foe. During their time together, they would learn about each other's strengths and weaknesses, and this could lead to a deeper understanding and a change in their relationship.
To develop their relationship in a fanfic, it could start with a simple conversation. Maybe Izuku asks Momo for advice on how to improve his academic performance, since she is one of the top students. Momo is initially a bit formal, but as they talk more, she realizes Izuku's genuine eagerness to learn. This leads to more interactions. They could then be paired for a rescue mission where they have to rely on each other's strengths. Izuku's physical strength and Momo's ability to create necessary tools make them a great team. This experience cements their friendship, and from there, it could potentially develop into something more romantic as they continue to grow and support each other.
Well, at first, the yandere could start as a normal acquaintance. Maybe she's just a fan of Izuku's heroics. But then, as she gets closer, her possessive feelings start to emerge. For instance, she might notice how Izuku is always around other people and feel left out, which then turns into jealousy. This jealousy gradually grows into more extreme yandere behavior.
The relationship can be developed through shared experiences. For example, if they are both part of a rescue mission. During the mission, they can rely on each other's strengths. Deku's physical courage and Momo's intellectual capabilities can combine to save lives. This mutual reliance can start to build a deeper connection.
The relationship can develop if there is some sort of forced proximity. Let's say they are both on a mission in a foreign land and have to pretend to be a couple to gather information. At first, they are uncomfortable with the idea, but as they play their parts, they start to notice good things about each other. Bakugou might notice Toga's intelligence when she comes up with clever cover stories, and Toga might be drawn to Bakugou's protectiveness. Over time, this could lead to a deeper emotional connection between them.
One idea could be that Shoto and Izuku have to team up for a special training exercise that goes horribly wrong. They end up in an unknown part of the forest and have to rely on each other's quirks to survive and find their way back. For example, Izuku uses his One For All to climb tall trees to get a better view, while Shoto uses his ice to create shelters at night.
In fanfiction, Izuku's character could be developed by giving him a different quirk origin story. This new origin could make him more mysterious. Bakugou, on the other hand, could be developed by having him take on a mentorship role for some younger students. This would force him to be more patient and understanding, which is different from his usual brash self.
In many fanfictions, Izuku and the Hero Killer have a complex relationship. Sometimes, Izuku might be portrayed as trying to understand the Hero Killer's motives, which are often misconstrued but rooted in a desire for 'true' heroism. This can lead to some really interesting character development for Izuku as he grapples with his own ideas of heroism in the face of such a radical view.
Another way the bond can grow is through training together. In the world of My Hero Academia, improving one's quirk is crucial. When characters train side by side, they not only learn about each other's quirk capabilities but also about their determination and work ethic. This mutual respect and admiration that develops during training can form a strong bond in fanfiction.
Another possibility in fanfiction is that they could be in a team - up situation more often. Given Izuku's determination and Pixie Bob's skills, they could make a formidable team. They might work together on rescue missions or fighting against powerful villains. Their combined efforts could lead to some interesting storylines, such as Izuku learning from Pixie Bob's earth - based powers and incorporating some of her strategies into his own fighting style.