Pokemon: Building a Legendary Beast Starting with Rayquaza

[Pokemon] [Legendary Pokemon] [Reality Merges with the Game] [Multiple Female Leads] After accidentally transmigrating to the world of Pokemon, the entire world enters the Pokemon era. From the start, he awakens a Legendary Pokemon Creation System and sets off on the path to creating gods. Su Yu had hoped to rely on the power of Legendary Pokemon to become the greatest Trainer in the League, but he finds himself caught up in all kinds of incidents. The favor of Legendary Pokemon? A future ex-girlfriend? The League's hope? The champion of a secret realm? Su Yu says, I just want to become a Pokémon Master, that's all. [This blurb is short and not very informative. Please read the main story for details.]