One challenge could be wild Pokémon that guard the berry patches. They might not want Ash to take their food source. Another is that some berries may be in hard - to - reach places, like on top of cliffs or deep in thickets.
In Pokemon fanfiction, Ash might forage for berries to heal his Pokemon. He could be in a forest, carefully looking among the bushes for Oran berries, which are great for restoring a bit of health. It's a common and practical activity for trainers in the Pokemon world.
One challenge is communication. If they are turned into a Pokémon that doesn't have a human - like language ability, it would be hard to convey their thoughts and needs. Another challenge is adapting to a new physical form. For example, if they become a flying - type Pokémon, they have to learn how to fly which is completely new to them as humans. Also, they may face danger from other Pokémon who see them as either prey or competition.
Ash might use his Pokémon to help him find berries. For example, his Pikachu could use its electric powers to shock berry - filled bushes, causing the ripe berries to fall. Or he could have Bulbasaur use its vine whip to reach berries in high places.
One challenge could be his own reputation. Since Fenrir is often seen as a dangerous werewolf, other characters might not trust him around Hermione, which could make it difficult for him to carry out his protection duties effectively.
One challenge could be the public perception. The wizarding world may not be very accepting of Hermione raising Voldemort's daughter. There could be a lot of fear and suspicion. Another challenge is Delphini's own nature. Since she has Voldemort's blood, she might have some inborn dark tendencies that Hermione has to constantly fight against. Also, Hermione would have to deal with the memories and legacy of Voldemort that might be a part of Delphini's upbringing.
One challenge Naruto might face is Gaara's past traumas. Gaara has been through a lot of pain and isolation, which has made him distrustful. It would be difficult for Naruto to break through those barriers and get Gaara to open up. Another challenge could be the political situation. Suna and Konoha have had their differences in the past, and some in Suna might not be happy with Naruto's influence on Gaara. Naruto would have to deal with any potential political unrest or opposition from those who don't trust Konoha.
Naruto would likely struggle with Hinata's shyness. He is a very outgoing person, and suddenly being in a body that is naturally more reserved could be difficult. For instance, when interacting with other characters, he might accidentally come across as too forward or too quiet, which could lead to misunderstandings. Also, Naruto would have to deal with Hinata's personal relationships. Her friends and family know her in a certain way, and any changes in behavior due to Naruto's possession could cause concern or confusion among them.
One challenge could be living in Ash's shadow. Since Ash is so well - known in the Pokémon world, it might be hard for the character to be recognized for their own achievements. Another challenge could be dealing with Ash's impulsive nature. If the character is more cautious, they might constantly have to balance Ash's eagerness to jump into things. Also, they might face challenges from other trainers who assume they are just like Ash or are trying to use them to get to Ash.
One challenge could be distance. Since Ash is often on his journey traveling from region to region, being away from Alola Lily for long periods might put a strain on their relationship. For example, he might miss important events in her life or she might feel lonely without him.
One challenge could be that Larvitar might be very stubborn at first. It's a strong - willed Pokémon, and it might not want to follow Ash's commands right away. Another challenge could be that Larvitar might be targeted by other trainers or Pokémon hunters because it's a relatively rare Pokémon. Ash would have to protect it.