GATE Fantasy Self-Defense Force

The story depicts that in 20XX, a sudden "gate to another world" appeared in Ginza, Tokyo, from which a large number of monsters and troops poured out. While repelling them, the Ground Self-Defense Force also rushed to the "special zone" on the other side of the door. As a result, Yohji Itami, an otaku second-class land guard who served as the commander of the third reconnaissance team, had wonderful interactions with beautiful girls from other worlds such as elves, mages, and demi-gods while helping villagers attacked by a giant fire dragon.