>>38380511>Does this manga cover how Gio came to be the Rocket boss?Unfortunately no, also I don't think it's supposed to be canon. It was created to advertise PTCG by Kagemaru Himeno (artist of PTCG and of the Game Boy PTCG). It's a collection of stories about people of the pokemon world (known npcs and originals).
It's partially translated here
https://jb2448.info/index.php?/category/2202