At first, it would be really tough for the boy. But he would observe other Pikachu around him if there are any. He'd see how they interact with the environment, how they play and how they protect themselves. By mimicking them, he could start to adapt. He might also try to use his human intelligence in his new Pikachu form. For instance, he could use his knowledge of the human world to find new sources of food or shelter that other Pikachu may not be aware of.
He might start by getting used to his new physical abilities. Since Pikachu is an electric - type, he'd need to learn how to control his electric shocks. For example, not accidentally shocking his friends or family.
The boy would have to adapt to a different diet. Pikachu mainly eats berries in the Pokémon world. So he'd need to figure out which berries are safe and delicious for him. Also, he has to learn to move around on all fours which is very different from how a human moves. He might initially be clumsy but gradually get better at it as he practices more. And he has to communicate in a different way too. Instead of speaking human languages, he may use Pokémon sounds and gestures to convey his feelings and needs.
It could start with the boy having a really strong wish to be a Pikachu. His intense desire somehow triggers a magical event that turns him into one. Once he's a Pikachu, he discovers that the Pokémon world is not as simple as he thought. He has to face challenges like avoiding being caught by Pokémon trainers and finding food suitable for a Pikachu in the wild.
At first, she might be in shock and confusion. But as time passes, she starts to discover the physical abilities of her new form. For example, she learns how to use her wings to fly, which is a completely new experience for her. She also has to get used to her enhanced strength and senses.
He can start by being friendly and approaching classmates to make friends. Also, asking teachers or older students for help with finding his way around the school.
He might become more aggressive due to the dragon's natural instincts. Dragons are often seen as fierce creatures, so he could be quicker to anger.
Well, Naruto might first be really confused. He's used to being a boy, so suddenly being a girl would be a huge shock. He might start by trying to understand the physical differences. For example, getting used to different clothing styles. And in terms of his relationships, his friends like Sasuke might react in a strange way at first. But Naruto being Naruto, he'd probably still be as determined as ever. He could use this new form to his advantage in some situations, like using his new appearance to deceive enemies. After all, he has always been adaptable.
Well, he might first struggle with the new physicality. Titans are much larger and more powerful than demigods. He'd have to get used to the increased strength and different abilities. Maybe he starts by testing out his new powers in a secluded area, like a hidden forest or an abandoned island. He'd also need to deal with the mental aspect. Titans have a different mindset, often more focused on power and dominance. Percy, being a good - hearted demigod, would have to find a balance so he doesn't become too power - hungry.
He shows his love by always keeping the red balloon with him. He doesn't let it go and takes it everywhere he goes, like a precious possession.
Well, it's possible that her magic becomes more attuned to male - dominated magical fields. If in her normal form she was great at academic magic, as a boy she might find she has a natural affinity for combat magic. She could discover that she can learn certain spells quicker, like the more aggressive hexes and jinxes. This change in her magic could also lead to her having different magical relationships. For instance, she might attract the attention of male magical creatures that were previously indifferent to her, and they could offer her new forms of magical knowledge or assistance.
JYP Entertainment likely scouted talented individuals and then trained them rigorously to form Boy Story.
He might face social challenges. For example, people may treat him differently based on his new appearance as a girl. He could also face challenges in relationships. His old friends might not know how to act around him anymore.