Others Are Waging War, but I Suppress the Human Race for Eternity.

God of WarNo SystemInvincible A hundred years ago, spiritual energy revived and all races from the abyss descended. He was born out of nowhere, suppressed all races, and became a god of war. After his success, he retired and hid in the city. A hundred years later, the world reestablished order under his shadow, respected martial arts, and recuperated. However, the human race, which had been at ease for too long, began to fight for fame and wealth, build military and military affairs, and form political factions. Resources are monopolized, geniuses die young, and there are no successors. Little do they know that all the races in the abyss are ready to make a comeback. Until his new girlfriend asked him in front of the whole school what an F-grade waste could do besides helping the school sort out waste paper. Say he doesn't deserve it! Until someone, in order to test him, kept attracting strange beasts into the city in an attempt to exterminate his family.