Good News! I've Awakened a Pokemon

This is a world invaded by exotic beasts. After dimensional rifts opened, the beasts seized vast swathes of Blue Star. At humanity's moment of crisis, people suddenly discovered they had awakened professions. They formed an alliance and, after centuries of effort, finally stopped the beasts' expansion. Han Lingyao, a transmigrator, regained the memories of his previous life on his sixteenth birthday. Next came the awakening ceremony at the start of his first year of high school. There, he awakened the “Pokemon” profession. He thought he would be a Pokemon summoner, but it turned out he was the Pokemon himself. Using the System's shop and lottery, he would turn himself into an all-types [Pokemon] (crossed out) human. Then Han Lingyao noticed something strange: the exotic beasts looked very familiar to him, and some of his attacks were sometimes highly effective against them, sometimes weak, as if... No! It had to be Pokemon type matchups. Something was off about these so-called exotic beasts. He finally encountered their royal family and discovered the truth: it was him. He hadn't changed his ways. His evil side had come to this world, hoping to use the technology of humanity in that other world to create a new species, wipe out the people of Blue Star, and take over completely.