Last Period: the journey to the end of the despair

In a world where loneliness gives birth to strange creatures known as "Spirals," only those called "Periods" can defeat them. Haru, a young apprentice Period, serves in the Arc End 8th Branch. But after a baffling theft leads to financial ruin, the Arc End headquarters disbands the division, leaving just three Periods-Haru included-behind. Now, Haru and the other two must work together to restore the 8th Branch from the ground up.