Here's all you need to know. the first part of this three part game is OK at best. the other 2 parts only get worse. i'd recommend getting from the abyss way more (it's the same game NOT split into three parts and you get multiplayer support and you can level up).
i'm not sure how good from the abyss is but it's at least better then anonymous notes.
Jirachi is the best pokemon "I'll wait for you here it what princess do from what i understand it's kind of a family tradition."