Last Period: The Journey to the End of the Despair

The world was gripped by terror of the creatures known as Spirals. These mysterious beings spread fear and destroyed lives and cities. The only force capable of standing against this chaos were the Periods, warriors with the unique ability to fight the Spirals. Their mission was not just to protect humanity but to break the chain of darkness oppressing the world, and the Arc-end organization was founded as a stronghold in this struggle.

In one of its bastions, a fortress town home to the Eighth Branch of Arc-end, something strange happened: a mysterious theft caused a financial crisis that paralyzed everything around it. Seeing the disorder, headquarters decided to dissolve the branch and reassign its fighters to other units. However, Erica, who led the branch, had no intention of giving up so easily and set out to restore its former glory. For this she needed the help of three novice Periods: the determined Haru, the dreamy Lisa and the steadfast Gadge. Erica's stirring speech lit a fire in them, and Haru in particular was moved, as his dream of becoming the greatest Period began to take shape. They were joined by the mysterious Choco, who held many secrets, and a strange creature named Miu.