Uncommonly Common [Assassination Classroom]

"It was a normal day. Just like every other day. Every night, I watched the stars sparkling in the sky, and the moon shining towards the Earth. That night, out of blue, the moon exploded. I was shocked. Was I dreaming or was this real? The moon... From full moon to crescent moon. What is the cause of this? I hope they'll manage to catch whoever did this. Because it's unforgivable." -Hikari Tooru