Dominion's End - Volume 5, Extra 2: One Day in the Apocalypse

Vincent Strider was a gun for hire who made a living by killing whoever it was his clients wanted dead. But during one mission, he died in a fierce gunfight. However, death was not the end for him. Vincent found himself reincarnated in another world, facing a floating interface that flickered before his eyes.[Synchronizing Host!][Military System initializing.]Vincent found out that in this system he received, he can summon soldiers, tanks, aircrafts, and even warships! This is going to be exhilarating.

My name is Joo In-gong. The name that my parents gave me meant ‘protagonist’ of the world. Really?

“Boss…I’m really sleepy….” My eyelids were starting to feel heavy. After all, it was past 3am. Most normal people would be asleep by now.

At the genesis of the world, the ‘Dark God Entropy’ was defeated in the fight between the five other Gods, and was sealed.