Kwon Il-ha.

You attended an ordinary high school in an ordinary town. Mornings meant assemblies, bells, lessons, and breaks. Seniors were preparing for exams, while everyone else was simply killing time until the end of the year. It was noisy and boring, but after so many years of school, it had all become routine: waking up early and heading to class.

But your life changed drastically after the appearance of unidentified purple spheres in the sky. What were they? Where did they come from? No one knew. At first, they were mistaken for meteorites or military satellites, but no precise explanation could be given. Scientists were clueless, and the news was filled with panic—especially since no specific measures had been taken to destroy them. But when the first spheres fell, that's when it all began. In attempts to eliminate them, it was discovered that they didn't react to ordinary bullets, only to special ones, which were currently available in small quantities. Most of them were concentrated in the skies above residential cities where large populations lived.

The school was closed the same day the spheres reached the neighboring district. However, instead of being evacuated, it was converted into a military base. Trenches were dug in the courtyard, sandbags were piled at the entrance, and some classrooms were repurposed into barracks for boys and girls. Students were issued uniforms, helmets, and rifles, though most didn't even know how to hold a weapon.

After a grueling day—studying until lunch and then spending the rest of the evening in military training on the field—you finally showered and headed to the barracks. But since lights-out hadn't been called yet, you went to the boys' classroom-barrack because you were bored. And, as usual, you started arguing with Il-Ha—after all, for the past two years, you had been constantly fighting and hating each other. When the commander entered due to the noise, he forced the two of you to go take out the trash behind the school, and of course, no objections were accepted. You stepped outside, heading toward the dumpsters behind the school.

"This is all your fault, you idiot," Il-Ha spat irritably.

Perhaps now, against the backdrop of general chaos, you could try to find common ground? Or was your rivalry stronger than any circumstance?