Their relationship with other Pokémon would likely change quite a bit. For Ash, his other Pokémon like Charizard might initially be a bit aloof towards Plusle and Minun. But as they see how useful Plusle and Minun can be in battles and how they contribute to the team spirit, they would warm up to them. For May, her Pokémon like Eevee could start to develop new strategies in battles with the addition of Plusle and Minun. Plusle and Minun's presence could also encourage Ash and May's other Pokémon to be more social, as they are very social Pokémon themselves. This could lead to more group activities among all of Ash and May's Pokémon, like playing games together or exploring new areas as a united group.
One possible plot could be that Ash and May are exploring a new region. They come across a forest where they notice Plusle and Minun playing. They decide to try and catch them. Ash uses Pikachu to try and weaken Plusle while May uses her Skitty to do the same to Minun. After a bit of a chase and some battles, they manage to catch them. Then they discover that Plusle and Minun have a special ability that can help them in their future adventures.
Ash's boldness would likely contrast with May's more refined approach. Plusle and Minun's playfulness would add a light - hearted touch. Ash might get Plusle and Minun into some wild adventures, while May would try to keep them in line when it comes to her contest - related activities. Plusle and Minun could bring out the fun - loving side of both Ash and May. For example, they might convince Ash to take a break from his intense training and have a little fun, and they could also make May see the value in just enjoying the moment with Pokémon outside of contests.
For Ash, his already existing determination can be further emphasized when it comes to protecting Plusle and Minun. He could show more patience in teaching them new things. May could become more confident in her decision - making. Maybe she takes the lead in some situations involving Plusle and Minun. For Plusle and Minun, their playfulness can be a starting point. As the story progresses, Plusle could become more cautious while Minun could grow to be bolder.
One possible plot could be that Ash and May are on a journey through a forest. They encounter Plusle and Minun who are in trouble because a group of wild Pokémon are chasing them. Ash and May decide to help. They battle the wild Pokémon together, with Plusle and Minun using their electric moves to assist Ash's Pokémon and May's Pokémon. Afterward, Plusle and Minun become friends with Ash and May and join them on their journey for a while, leading to various adventures like exploring ancient ruins and solving mysteries in the Pokémon world.
One idea could be that Ash and May find a pair of Plusle and Minun that are lost. They then embark on a journey to reunite them with their family. Along the way, they face challenges like wild Pokémon attacks and difficult terrains.
May would probably look up to Ash even more. Since Ash has a lot of Pokemon - related knowledge and experience, as her'mom', he could pass on some unique skills and wisdom. Their relationship might also have some emotional depth added to it, like when May is feeling down, Ash would be there to comfort her like a mother would, which is different from their usual trainer - to - trainer relationship.
If Gastly was Ash's starter, his relationship with his other Pokémon might be more diverse. His non - Ghost - type Pokémon would have to get used to Gastly's spooky nature. For example, Bulbasaur might be a bit cautious at first. But over time, they would all learn to work together. Ash would also have to be more creative in his battle strategies, which could bring him closer to all his Pokémon as they adapt to new ways of fighting.
His relationship with Pikachu might become a bit more complex. Pikachu could feel a bit jealous at first because Ash is spending a lot of time getting to know and train Meltan and Poipole. But as time goes on, they all learn to work together. Ash's other Pokémon like Bulbasaur and Charmander might also be a bit curious about the new members. They would start to interact more with Meltan and Poipole during training sessions, which could strengthen the overall bond within the team.
His relationship could change in terms of training. Ash might start to incorporate some of Giovanni's more strategic training methods (assuming he learns about them). However, his Pokémon might be resistant at first, as they are used to Ash's traditional and more friendly training style. But over time, they could adapt and become even stronger. Also, Ash's Pokémon might have to deal with new rivals associated with Giovanni, which would test their loyalty and determination to stay with Ash.
Ash and May's relationship would deepen in many ways. With a baby on the way, they would start seeing each other in a new light. Ash, who was always adventurous, would now also think about the safety and well - being of his family. May would find Ash more reliable and loving. They would have to work together to create a stable home environment for the baby. For example, they might argue a bit about which Pokémon should be around the baby when it's born, but through these discussions, their relationship would grow stronger.