I, Rick, the strongest human

The human species, ranked last among the [-] races, has zero magic adaptability, can't use any magic, and can't even detect when someone uses magic.
Traveling to the world of Game Life 6000 years ago, his hometown was destroyed in the Great War. In order to survive in this dangerous world, Rick decided to become stronger.
Three years later, when the Ex-Machinas assembled their entire clan to attack the Dragon Elves, Rick was sitting on the bed and thinking hard about the chessboard.
"mmp! Why can't I even beat myself!"
Annoyed, Rick threw a stone into the sky, just hitting the dragon spirit.
Dragon fine species, pawn.
Ex-Machinas: ? ? ?
……
"Huby, why do you ask me to become so strong?"
Looking at Shubi, who looked expectant, Rick told the secret of becoming stronger with a serious face.
"100 push-ups, 100 sit-ups, 100 squats, and a 10km long-distance run, stick to it every day!"
"I've become more handsome and stronger!"
World order: No Game, No Life...One Punch Man...Hakoniwa x Neptune (in progress)
Follow-up: Jian Niang, Gensokyo (Thousand Years ago), Dating, Real Education, Lelouch (in undetermined order)