Pokemon: Setting Out on a Journey with Hikari to Become the Strongest

[Soul Transmigration + Divine Beasts + Not Invincible and Mindlessly Overpowered from the Start + One Female Lead, Koharu] By chance, I arrive in the Pokemon world and become childhood friends with Koharu. This book mainly follows my journey with Koharu and Rayquaza as we pursue the strongest in the Pokemon world. I obtain Rayquaza from the start, but I won't mindlessly steamroll everything. The opening will include some original details about the protagonist, but the story will quickly get onto the main plot, along with everyday moments traveling with Koharu. I hope everyone can be a little patient with the author. Feel free to share any suggestions, and I'll make changes!