Romanticide, you get Nostalgia the Froakie. Nostalgia LOVES ash Ketchum from the 'good ol days' and respects him as much as possible...
I wanna be the very best, like no one ever was. Nostalgia must always be the highest level'd mon on your party (can be joint highest)
To catch them is my real test, to train them is my cause.You have to catch 5 Kanto Pokémon before nostalgia can become a Frogadier (I know you have your team, you don't have to use any of these lol)
I will travel across the land, searching far and wide.No repels whatsoever. Nostalgia loves dat Pokédex!
Each pokemon to understand, the power that's inside! He needs to have hidden power before he can become a Greninja (TM is in southeast house in Anistar City so you can use your dark type to solo Olympia '_')
So to recap...
Nostalgia the Froakie.
Always at least joint highest Pokémon in party (If not, he isn't allowed into battle)
You're not allowed to use any kind of repel
To evolve into Frogadier, you need to catch 5 Kanto Pokémon (Charmander doesn't count)
To evolve into Greninja, you need to learn hidden power in Anistar City
He must solo Olympia and must never forget hidden power.
Have fun!!