My System Is a Little Rough

I traveled to the world of Pokemon and became Sakaki's son. The strongest trainer can only be me! As a system for the welfare of time travellers, Sun Cheng has it. But why is this system different? Shouldn't it be about fighting monsters, upgrading, and accumulating resources to exchange for elves? How could he become an elf and become stronger so easily? Not only that, Sun Cheng also discovered a big secret of the system... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.