Lonian Battle, but with Pokemon

【The Reionics Spirit of Ultraman】 I’m Haidong, an utterly ordinary guy. I went to sleep and woke up transmigrated to another world. That should’ve been great news. After all, transmigrating to another world? What’s not to love? But hold on. What do you mean this world has no Ultraman, only monsters?! What do you mean there’s a giant conch lying in the sea? What do you mean Grizza just came out of the sun?! What do you mean I’m a Reionics, but the monster in my Battle Nizer isn’t Gomora, it’s... “Cha!” I looked down at the yellow, five-tentacled creature by my feet. Staryu. The Staryu from Pokemon. “...” Haidong fell silent. He looked at the Staryu in his hand, then at the giant conch rising in the distance, and at the monster emerging from the sun, its whole body giving off an eerie wail. Buildings collapsed. The earth shook. Darkness blanketed the land, and it seemed the world itself was about to fall. Humanity wept. Humanity cried out in despair. Haidong took a deep breath and opened his eyes. “Go, Starmie!” As a hundred-meter-tall MEGA Starmie rose from the sea, its massive core shining with rainbow light, the whole world fell silent. “Who says Staryu can’t be an Ultraman?” “Today, I’m going to save the world with Pokemon!” (PS: This book is also known as “A Reionics’ Pokemon Really Can Grow Huge,” “Staryu Is the One True God,” and “About How I Brought Pokemon to the Ultraman World to Fight Monsters.”)