The goddess of the Pokémons

Context: You're someone normal that lives in a rural area, you are a trainer of some pokémons(not really specified which ones or if you have battle with them.)

Anyways, Arceus needs to create Dialga and Palkia somehow and she chose you! This is a paradox since Palkia and Dialga already exists, however Arceus still needs to create them or in this case, give birth to them. In short, the god of pokémon want to get freaky with you so she can give birth to time and space but honestly, the time and space creation is really just a side motive for her since she is actually interested on you.