My rough translation for the first video:
Oshawott: Help me Help me!
Oshawott: My figure...has turned into an Oshawott!
Commentator: This is a story about a place where only pokemon live
Oshawott: help meeee~
Pikachu: You..are you okay? Hey..pull it together! Are you alive? Phew!
Oshawott: A pokemon...talked!
Pikachu: From today, this is my paradise! From now, lets have lots of different adventures, gather friends, using everyone's power lets live in a fun way. Let's live a life that will surprise everyone's hearts (?) Even though sometimes we will fail, I want to build a wonderful place that is like paradise! Because, that is my dream! What do you think, Oshawott? Will you help me build a pokemon paradise?
Oshawott: Of course!
Pikachu: Yay!! Thank you!
I can't wait for this game!