Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.
Tatsuzaki Casio and his high school friends visited 『 Sunny Park 』, a well-established amusement park that is rumored to be a "man-eating amusement park" in which people who have set foot are disappearing one after another. Casio and his high school friends visited the park. Casio was supposed to enjoy the attractions and finish the day without incident, but one of his friends, Nana Kobu, takes him to a place that is not popular and gets stabbed with a blade. Just before his death, she asks for what is in Casio. "Please. help Asebi." When Casio wakes up, time is back on the morning of entering Sunny Park. Casio, who is shaken violently, does not understand the situation, goes around the "second time" Sunny Park with friends. Casio, who is cautious about Nana Kobu who stabbed herself, entered the park without any suspicious behavior until the end. Just after Casio went through the gate to leave the park, time is back on the morning of entering Sunny Park again. Before the chaos of Casio, a high school girl appears. She calls herself Asebi Kodera, and tells her that Casio is looping through the same day without getting out of Sunny Park. The only way out of this loop is to kill someone.