Isekai: I'm an FPS Hero Who Was Summoned to Another World

Summary

I'm a die-hard FPS gamer. By mistake, I became the hero of an Isekai story. An incompetent Goddess summoned me to her world to defeat the Demon Lord. I'm in my element—guns, upgrades, action, and hordes of monsters to slay. There's even some magic… and Goddesses…