In a World of Martial Arts, I Awakened the Laziest-Fish Comeback System from the Start

High martial arts + nearly invincible protagonist + System. The protagonist was a total slacker, but who could have guessed that after awakening a System...

Classmate: “How can you get so strong when you sleep all day?”

Teacher: “Ahem... I always knew this kid had potential. I was right about him.”

Protagonist: “I don't know either. Maybe they just don't work hard enough.”

Everyone: “You lazy bum, you ***!!!!”