Emi found herself on her campus, unexpectedly participating in a competition she had no recollection of signing up for. She was paired with Tatsuki, a fellow student she had been avoiding since elementary school due to personal reasons. As she embarked on this unfamiliar journey, she encountered a cast of peculiar characters. A problem arose, and their only escape route lay through a deep pit. The unknown depths below filled her with an unsettling sense of dread. Would she join them, or would she face her doom?