Under the training tree

After his journey in Unova. Ash left his Pokémon in the Professor Oak's laboratory. They continued with their lives for a while, until one day, one of them, Oshawott, wanted to start a conversation with Snivy, who was training with a tree. That encounter was only the beginning of something new. (One-shot) (Sniwott/ShellPWNageShipping/Snivy x Oshawott)