Pokemon: The Origin Trainer Who Seeks Freedom

(Mega Evolution + no System + laid-back Pokemon slice of life + sensible characters + smart protagonist, slow-paced, proceed with caution if that's not your thing. Thanks for reading.) This is an origin world where humans and Pokemon coexist. It's been fifteen years since Xu Ye transmigrated to Guiluo Island. He's always longed to see the world beyond the island, and never given up looking for a way to return to reality. So he sets his sights on becoming an excellent Trainer, hoping to explore the mysterious world around him. Then one day, he sees a message from a 'god' in a dream, and everything takes a turn...