A/N: so I realize that this story is kind of bad without an explanation as to why Ash had to eat Pikachu or why they were on an island in the first place. So while I know very little about Pokemon in this prologue I will try to clarify. This takes place 2 days before the story.
Ash was browsing in a store about to buy some stuff when, suddenly the shopkeeper says "Hey kid! I recently discovered an island in the middle of an ocean. Originally I was going to go take a look this weekend but, something came up and I can't go anymore. You look like you're a strong trainer. Do you mind going to take a look for me." Now hearing this most people would just politely decline, buy their stuff and leave. But because this is Ash, (and I, as the writer think Ash being normal would be boring) he accepted. "Great! I'll rent a helicopter for you to go. The island's name is, as I've deemed it, Madness Island." With that the shopkeeper leaves after Ash buys his stuff. Ash also went to pack some bags for the trip.
The day of the trip
As Ash walked back to the store, which he now realized was very shady, he was getting more and more excited. When he got there the shopkeeper told him the directions to the helicopter waiting to bring him to the island. Ash boarded the helicopter easily and after they left the pilot gave Ash a small backpack thing "here, you'll need this." He said as he gave the thing to Ash. Ash quickly and with great ease put the backpack on and the pilot told him to press a button on the straps if he ever found himself falling. The pilot then said "I'm sorry dude." And kicked him out of the helicopter (literally). As Ash fell through the sky, he panicked and quickly forgot the instructions the pilot had told him about the backpack thing. After calming down a bit Ash pressed the button and a parachute opened up. After he glided through the branches of the very thick jungle forest on "Madness Island" he sat down and began to take a rest and eat. Two minutes into eating with his Pokemon he realized that he should save his food so he doesn't starve. So he quickly put the food away and began walking through the dense jungle, searching for food. Very soon he came across a bush that had multicolored berries on it. Ash was about to eat it when he heard one of his Pokemon squeaking, it was hungry. So like every other decent Pokemon trainer, he fed the berry to the Pokemon. But about 3 hours later that very Pokemon died. Carrying his dead friend's corpse he continued walking. Then he remembered that leaves are also edible, but because of what had happened the time with the berry, Ash fed the leaf to one of his Pokemon not wanting to die. The same thing happened except the Pokemon died faster this time taking only 1 hour. Frustrated he cooked his friends' corpses and tried to feed them to his other Pokemon so they wouldn't go hungry, but the Pokemon refused to eat the meat and only did so after hours of coaxing and persuasion. Yet these Pokemon also died. So the last thing that was left was to eat the tree bark. After Ash got the bark from a nearby tree, he fed the bark to his other Pokemon. These ones, though, only lasted 30 minutes before dying and Ash assumed that the flesh would still be poisonous. At this point, Ash really regretted going into that shady store. With his only Pokemon left, Pikachu, Ash sadly began walking.
A/N: I hope this explained a lot of stuff, Thank you for reading.