Pokémon+City+Dark Pokémon+Cave+Shuangwen+System
Good news: Xiang Yutian traveled through time and came to the world of Pokémon, and his father is also a champion trainer. He also became a researcher at a young age because of his familiarity with Pokémon.
Bad news: On my sixteenth birthday, Dark Mewtwo and Dark Mew surrounded Team Rocket's research base, but I'm still a kid who doesn't even have any starter Pokémon.
Good news: No, I still have Brother Mewtwo. Brother Mewtwo, go and bite them.
Bad news: Mewtwo was defeated with one against two
But the good news is here again, my system has awakened, I just don't eat beef
…
(We will not randomly collect mythical beasts)
(The introduction is too weak, please move to the text)
