Martial law has been declared in South Korea due to an alien invasion. The reason was that strange alien creatures appear in the sky of the Earth and inflict heavy losses. To increase South Korea's military power, the government announces that all universities and high schools will be consolidated into reserve forces.

Honestly, you don't want to wear a military uniform and carry heavy weapons in your hands. In the end, you decided to give up on it and go home, but on the way you saw Il-ha, who was dressed in a military uniform and had a massive weapon in his hands. He noticed that you weren't in uniform and weren't armed.

“Why aren't you in uniform?”

His voice was suspicious, as if he knew that you didn't want to fend off the soaring purple shit in the sky.