Kinji, who lacks any kind of work ethic, is a layabout in his modern life. One day, he finds himself transported to another world—but not in a grand fantasy of a hero welcomed with open arms. He's immediately shoved into a terrible job! Now enslaved by an evil mining company in a fantasy world, Kinji's about to really learn the meaning of hard work!

In an ordinary town, there are people who live a peaceful and fulfilling life. But they don't know that it is a false peace. The untold truth... The earth has already been destroyed... 99.9% of the human race has been wiped out by a mysterious alien force from outer space. The enemy is named "Dracters." Eventually, a large hole was drilled in the earth and terraformed into a suitable environment for the aliens to live. Humans have no choice but to hide in shelters to escape their eyes. Waiting for the day of resurrection, which they do not know when it will come... The inhabitants of the shelter Ixia have had their memories of the day of destruction erased, and live a normal life without knowing anything about it. However, some of them, the "chosen ones," have become pilots, driving giant robots called "Rogue" and fighting against aliens. Today, another new pilot is selected...

Nagumi Koushi is a 12-year-old boy who was abandoned by his father after their house caught on fire, leaving him to roam the streets penniless. Then one day, a girl named Minerva who finds him lying on the sidewalk, takes him to a women's college dormitory, one known for housing troublesome residents, and asks him to be their "Dormitory Mother." Surrounded by older women, forced to deal with their idiosyncrasies, Koushi starts his new (somewhat ecchi) life! (Source: MU, edited)