I Am a Martial Artist Who Is Not Good at Words!

Mechas, alien beasts, martial arts... This world is already a different place. What was once a sharp blade against the enemy has become a poison that scrapes the bones. A world that has never been touched before is revealed in front of you. "You just need to lower your head..." "Bang!" The peak of the fist is stained with blood. "I'm so humble, uncle!"