It is a fan-made story.
It is like a what if these characters existed in the series.
this story takes a 8 year time period before Ash's journey.
(it is my first story, So, if I make any mistakes please forgive me)
Finally! It's the day, 10 year old Ethan had dreamed of since he was a little kid. He finally gets to become a Pokemon Trainer! Thinking that his journey will be easy, he sets off to explore the Kanto Region. But he soon realizes the harsh reality of the pokemon world. With Team Rocket on the loose, Ethan and his friends, Luis, and Rylee travel around Kanto, hoping to foil their plans!
(I do not own the image, and I found it on google)