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... (Source: Crunchyroll, edited)

Second season of Megaton-kyuu Musashi.

Twelve-year-old Koushi Nagumo's life suddenly goes downhill when his father abandons him after their house burns down. Left to fend for himself, Koushi collapses on the street, but an eccentric woman named Mineru Wachi takes pity on him and brings him to the female dormitory Megami-ryou. After learning of Koushi's situation, Mineru, who happens to be the temporary manager, invites him to become Megami-ryou's official dormitory mother. However, what awaits him are the dorm's residents—each with their own wacky shenanigans—like the androphobic yet gentle Atena Saotome, the feminine tomboy Kiriya Senshou, and Mineru herself, whose recklessness knows no bounds when it comes to science. Despite this, Koushi does his best to fulfill the duties of this crazy new life!

In the first test of a revolutionary personal battle-suit, the MADOX-01, Ace female test-pilot Elle Kusomoto smashes an attacking tank force and humiliates Lt. Kilgore, Japan's most-macho tank-jockey, in the process. Kilgore swears he'll get even, and he gets his chance when the prototype MADOX literally falls off the back of a truck in the middle of Tokyo. Meanwhile, the MADOX, which fell off the back of one truck, off a bridge, and into the back of another truck, has found its way into the hands of college student Koji Sujimoto. Intruiged by the MADOX, Koji makes the big mistake of fooling with it without reading the manual first, and soon finds himself locked in the suit and zooming around downtown Tokyo.