You Ask Who I Am? I Am the Master of War!

[System + Troop Summoning + Multiple Heroines + Arena Breakout, Lost Light, Delta Force, and more. Characters from other games will join later.] Also known as: Raising an Army! I Am the Master of War! What is war? It is the use of violence, attacks, and killing by groups, factions, organizations, nations, and governments against one another! It is armed conflict between hostile sides, waged to achieve political, economic, territorial, or other goals! It is a hail of bullets, tanks reigning supreme on land, warplanes soaring through the sky, advanced missiles, warships ruling the seas, endless torrents of blood, fields of ruins, countless corpses, and monuments built from piles of heads!!! It is the naive, childish fantasy of the young and ignorant! My name is Zero. I'm a special forces soldier forced to operate in the shadows. I have no parents or family, and my comrades killed me in a political conspiracy! When I opened my eyes again, I found myself in a world both familiar and strange! It was familiar because it was made up of several shooter games I knew well! It was strange because this was a world that was absolutely real! Here, there are no respawns and second chances, no health regeneration just by breathing, and no magic injection that instantly heals your wounds so you can leap back into battle. Here, everyone is equal, and every life is their only one! Come on, soldiers! Raise your guns! Let the tanks roar across the land! Let the planes thunder through the skies! Let the warships sail across the raging waves! Announce my arrival to the world!!!