The normals are good guys so to speak, and the shinies are possessed demons, aka the bad guys. The goal iof the normals is to either fidn a way to exorcise the shinies or kill them, depending on your character's personality. The goal of the shinies is to kill anything and everything, even each other. And it's fine that Yuu knows Thunderbolt.
Name: Kin
Gender: Female
Breed: Jolteon
Shiny: Y
Level: 23
Personality: Before she became possessed, Kind was very well respected among her peers and a much loved sister to Tsuchi. As a possessed demon, she cares for nothing and now strikes intense fear into her beloved sister.
Attacks: Thunderbolt, Double Kick, Sand Attack, Thunder Wave
Name: Tsuchi
Gender: Female
Breed: Leafeon
Shiny: N
Level: 19
Personality: Tsuchi is typically a quiet an well-rounded character. She looks up to her older sister, but ever since she became possessed, Tsuchi has become a terrified individual
Attacks: Razor Leaf, Sand Attack, Iron Tail, Protect