Today, the world is in turmoil due to an "unprecedented catastrophe." Suzushirou, a young man who lives as a newspaper scholarship student in Tokyo, had a secret that no one could tell. An incident that happened in the summer of my third year of high school made it possible for me to stop the time around me regardless of my will. One day, Suzushiro meets a person who can share the secret for the first time. Like myself, Nazuna is a girl who has been hurt in her heart and has been able to stop her time. Suzushiro finds out that she is being used for crimes by her brother Seri, and reaches out impulsively. "Let's run away with me!" Can they move the time they have stopped again? (Source: Eien no 831 official site)Today, the world is in turmoil due to an unprecedented catastrophe.