Surrounded by Mythical Beasts at the Beginning, You Let Me Conquer the Green Caterpillars

Lin Yu was born on the top of the World Tree. Arceus is his guardian, Dialga and Palkia are his childhood playmates, and Giratina is his family's gatekeeper. Born with the superpower to communicate with all things, any Pokémon is as docile as a cat in front of him. Just as he was thinking whether he should go for a ride on Rayquaza or Kyogre today, a strange system awakened: [Congratulations to the host for awakening the strongest trainer system! Linyu:? [Newbie mission release: Please find and capture your first Pokémon, the green caterpillar, in the forest! [Task reward: elf ball x5, wound medicine x1. Lin Yu looked at Meng Meng who was lying on his lap acting coquettishly, and then at Groudon and Kyogre who were fighting in the distance, and fell into deep thought: "System, are you sure you didn't bind the wrong person? There seems to be no Pokémon weaker than the green caterpillar here." [After testing, the host does not have any officially registered Pokémon, and the mission is correct! Please complete it as soon as possible, otherwise there will be terrible punishment! "Oh? How scary?" [Punishment: Confiscate all wild Pokémon from the host and forcefully send them back to Zhenxin Town! Lin Yu: "..." System, you are seriously ill.