He's Obviously a Cannon Fodder but He Has to Do the Protagonist's Job

Quick article Lu Qingye fell ill and spent almost his entire life lying in a hospital bed, barely relying on modern medicine to survive until the age of nineteen. He didn't know how long had passed since he lost consciousness, and when he thought he was dead, a system suddenly appeared in his mind, asking him if he accepted the world completion plan. Lu Qingye chose to participate in the World Completion Project because after completion, he would be able to return to his original world with a healthy body. So Lu Qingye began his journey with the system into various worlds to complete the world's plot. There is no other golden finger except not dying. CP guess by yourself, hahaha Intention: None