First of all, you aren't making a good impression on me with the amount of typos found in your post. You made four typing mistakes. Plus, it's too short to actually count as anything other than a rough idea or a summary of the story.
But anyhow, right now your story just seems to be lacking something. All I can see is that the main focus of this is going to be seven giant Pokemon destroying the world. Maybe you'll add more to this.
I'm kind of leery of the "Mew was the only Legendary Pokemon" part. Only because Arceus is considered to be the god of the Pokemon world, and I find it difficult to believe that Mew created god. But maybe my view of Pokemon lore is different from yours.
I dunno. Right now this all just seems to be extremely confused. I have no idea what's going on. All I can think of is that Pokemon anime episode about Pokemopolis that had a giant Gengar, Alakazam, and Jigglypuff.
And what do you mean by "updates to the story will be in this post"? Are you going to summarize the plot here? Or just tell the whole story in this one post, which is difficult to do with the character limit for posts.
I'm just really confused by the whole thing. It all starts with Mew, but the story begins with Ash who defeats the Sinnoh league and returns home to find it destroyed? Yeah, I'm just so confused by this.
You need more description in your story to get more readers in. Otherwise, they all might be just really confused by what's going on and leave.
Oh, wait. I think I just realized what you meant by "updates to this story will be in this post". You don't have any final product to produce, so you're posting this as a "place holder" of sorts and adding to this as you go. It's not a good idea to post unless you have the final version of the chapter/story. You shouldn't rush into this.
But I do wish you good luck on keeping your interest in this project of epic proportions. I hope that you won't tire of this before the great lengths are achieved.
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