故事描述一名女高中生被班上的同學利用、冷落的日常生活。在這樣的生活狀況之下主角逐漸感到絕望，並因壓力提升而開始產生了與深海有關的幻象。
The story describes a high school girl’s everyday life, being used and cold-shouldered by her classmates. Under such living conditions, the leading role feels desperate bit by bit, and due to increased pressure, starts to feel an illusion about deep seas.
