Pokemon: Learning to Breathe in the Pokemon World

[No System] [Low Starting Point] [Healing + Heartbreaking] [Slow Burn, Extremely Slow, Incredibly Slow] [One Female Lead (No Romance)] A travel story with villains. The Mega Evolution System takes center stage, though other systems will appear too. Legendary Pokemon are tied to the main plot. The protagonist will interact with them but won't catch them. Wild battles have no rules, and the story features lots of lesser-known Pokemon. A snarky, growing protagonist; an imperfect angel heroine; a rival who's an absolute idealist; and a utopian world with shadows mixed in. I stayed up all night catching up on homework, then my heart stopped. I ran into a hypermasculine Ursaring and fought with everything I had, but still couldn't win... Other people transmigrate and become overpowered heroes, so why did I, Miharo, transmigrate only to become the world's biggest sucker? Where's my golden finger? Where's my System? Wait... *cough, cough*... Actually, I don't have either. As for transmigrating...