PKMN: Harem Master

From the introduction: On their tenth birthday, a child's Pokémon adventure begins! Unfortunately for us, this story focuses on a child by the name of Omni who, much like a kid by the name of Ash, overslept. As a result, when he went to the local professor's lab to get his Pokémon , all he found was a scathing note and a Magikarp. And let me tell you, nobody wants a Magikarp. As a result, he went on a minor rampage, tossing a few things, breaking some others, eventually settling on snooping through the good doctors things, looking for something to blackmail a better Pokémon out of Prof Oak with.