What was supposed to be a fun day at the amusement park turns into a nightmarish time loop for one high schooler. From the creators of the light novel and manga series The Tunnel to Summer, the Exit of Goodbyes (also from Seven Seas), which inspired an anime film. Sunny Park amusement park has become the center of a spooky urban legend: people who step inside tend to mysteriously vanish. Despite the creepy rumor, high schooler Casio visits the park with his friends, expecting a day of fun. But things go sideways when his friend leads him to a secluded area and does the unthinkable: she stabs him! Just before he dies, he hears her plead:
"Please... Save Asebi-chan."
Suddenly, he awakens to find himself still alive but back to the morning of the Sunny Park trip. Confused, he relives the day cautiously, only for things to end without any incident. That is, until he wakes up the next morning and realizes he's gone back to the same day again! Desperate for answers, he finally comes across a mysterious girl named Asebi, who tells him he's trapped in a time loop. And the only escape? Casio will have to kill someone.
