In the distant future, humanity is hurtling down a path of ruin. Global environmental destruction caused by chemical contamination, radioactive fallout, and UV rays coming through the patchy ozone layer has lead to deterioration of the human genome.

Rika Furude and Satoko Houjou are best friends who have lived in the small village of Hinamizawa for their entire lives. Alongside their other friends, they spend every day together, and every moment is filled with fun and laughter. However, as Rika and Satoko begin to grow older, a life-changing opportunity presents itself to both of them. Rika is determined to follow her dreams and wants Satoko by her side. Although Satoko is hesitant, she decides to walk this path with Rika. However, the realization of her dream forms a rift between them. This leaves the girls living in completely different worlds, with Rika enjoying her new life and making new friends while Satoko grows more and more isolated. Longing to return to the nostalgic days in Hinamizawa, Satoko despairs and wishes things could be changed. Just when she is at wits' end, an encounter with a supernatural entity changes Satoko's perception and imparts new revelations about her best friend Rika. This begins her journey to get the future she desires—by any means necessary.

During the late 19th century, Great Britain has become the greatest empire the world has ever known. Hidden within its success, the nation's rigid economic hierarchy dictates the value of one's life solely on status and wealth. To no surprise, the system favors the aristocracy at the top and renders it impossible for the working class to ascend the ranks. William James Moriarty, the second son of the Moriarty household, lives as a regular noble while also being a consultant for the common folk to give them a hand and solve their problems. However, deep inside him lies a desire to destroy the current structure that dominates British society and those who benefit from it. Alongside his brothers Albert and Louis, the trio will do anything it takes to change the filthy world they live in—even if blood must be spilled.

Recap of all 13 episodes of Vivy: Fluorite Eye's Song.