As a Time Traveler, Is There a System That Is Not the Protagonist?

(More everyday, maybe? There is no heroine, after all, the author doesn't have one, and even a guy like Ye Feng can't hope to have one! (￣～￣)) Ye Feng, who brought the system with him, came to the Neon Leveling Field to upgrade. Just when he was feeling complacent, he discovered that he was not the protagonist. After leaving the country, there were actually people with great luck here. Ye Feng was just sad. As a result, seeing the protagonist here being constantly tempered by various dangers and going through nirvana countless times, Ye Feng became an NPC and enjoyed the world with peace of mind. But who would have thought that no matter where you go, there will be more than one protagonist, and the system has mutated. "Gan..." Ye Feng has no other choice but to curse and accept his fate...