Rust Wars: I Have Infinite Upgrade System

[Decisive killing + system + rust war + lone wolf + no CP + no heroine + early farming] (The name is too long to write down. The original name is "Rust War: Infinite Upgrade System, Starting with Small Tanks" Alias: "Rust War: I have an infinite upgrade system" "Rust War: What? Can I build the Imperial Sky?") "Wait a minute, isn't this tmd just an upgrade module..." No. 18 Looked at the system and said with disdain. "Host, please believe that this system has never played the upgrade module you mentioned." … Three months ago, he was playing games at home when the sudden time travel caught him off guard. By now, he already knew what he had to do, and he no longer ran away from the war. "Then am I not the same thing as them?" He asked himself this question more than once. Finally, he finally realized that in this world, you either eat or be eaten. Thus, the story belonging to No. 18 Begins...