Two children since birth knew each other and we're best friend.
A introvert little boy, black hair, blue eyes, and loved mega evolution and Pokemon and dreams of becoming a mega evolution expert and professor like his father and has problems of showing emotions.
A little girl, extrovert, red hair, Brown eyes, loves Pokemon especially grass types and mega evolution, Dreams of being a gym leader or trial captain and can show emotions every well.
You think that those two wouldn't be friends because of different personalities they have but both are the best of friends, but when Mairin has to move away from Kalos and leaves Alain with him not knowing he gets in deep depression, losing all hope it's like his happiness and smile was gone.
Until he got the age of 16 and went to Alola region to go to Alola high to learn more about Z moves and maybe mega evolution, and some news friends.
Seeing her again.