It's been four years since Ash Ketchum and May said goodbye. They're now fourteen. In these years, Mauville City has become a mall and the houses have been sent to a new town on Route 111, North Mauville.
Ash and Pikachu were training in the desert, when May called his PokéNav.
"Ash, you there?"
"Yes, route 111."
"Meet me in North Mauville."
Ash went. Reaching the town, he found May and Blaziken standing there.
"What's up?" he said.
"We were going to train, wanna come?" said the lady.
"Yup!"
Some minutes later, they're training in the sandy desert of route 111.
Some hours later...
The sweaty teens decide to rest, but North Mauville doors are locked, so they go to route 112 and find a cabin by a river. They knock the door and it opens. It's a one-room cabin, with no one inside. They decide to sleep there until it's morning. But the clothes were stinky. Then the idea comes:
Ash says "Why don't we wash our clothes and bathe in the river?"
May answers "Alright."
And there they go. When May is going to strip off her shirt, she thinks "Ash will see me. What will I do?". And then she says "Ash, turn around.". He does it. She strips and enters the water totally naked. In there, she starts washing her clothes.
The boy decides to wash too. Then he starts taking off all his clothes and when he's only in boxers he tells May to turn around. As she does, he strips and enters the water to wash him and the clothes.
In the river, Ash decides to play a prank. He goes to May and jumps on her back, so that she falls on the sand floor. And she fell. Under the water, she saw all of Ash's glory. As she saw his, she decided to show him hers. She got up and said to Ash to close his eyes. She got out of the water and asked him to look. He saw everything and she tells him why.
After that some time passes and they decide to sleep in the nude to release the hot of the ambient. In the morning, they go back to training and decide to do the same more times.