The Leader: Even If the System Disappears, I Will Still Upgrade

Reborn ten years ago, Shen Yaosheng fully expected to be able to turn around and counterattack... But it turned out that his superpower was still the "control console" - it could only open and close doors!? I was terribly harmed by this ghostly power in my last life, and I will never make the same mistake again in this life! System: You have a new skill "Door Creation" - any object can be turned into a door! Shen Yaosheng: Wow hahaha, I can finally cheat! Campus, adventure, fighting, laughter, from today on, my power is not just to open and close doors, but to open the world and explore life! However, one day, the system suddenly disappeared. What should Shen Yaosheng, who no longer has plug-ins, do? --- I'm a new writer, so I'm not very skilled in writing. You shouldn't mind that, right? (Updated Thursday)