(Minor Spoilers Alert)
The story takes place in japan where a giant portal to another world appears in Tokyo, where a army from the new world appears and attacks Tokyo killing over 100 people. Japan outraged by this disaster calls for the JSDF to intercept and destroy the enemies. In no time the enemies are distroyed and in the mercy of JSDF.
The main character of the story is a commander of a small unit in the JSDF named Youji Itama he is a second commander and a self proclaimed Otaku. In the process he meets many friends in the way of different races and tries to make peace in the natives.
In my personal opinion I found this manga to be very interesting specially the fighting with most people will know right away that its complete rape. Modern weapons vs bows and arrows. However right away you can see that people in this new world understand very quickly that they are powerless to stop the JSDF. But the real interesting part of the manga is how other countries will decide to act like the United States and China, both who have interests in this new world which appeared in Japan.
Overall I give this Manga a 9 for creativity and story. Its a manga that people should check out.
