A university student named World. She thinks about things in her head more than anyone else, but her actions often run on empty, and from the outside, she leads a dull life. His girlfriend is cold, his friend, with whom he has had a rivalry since primary school, is steadily shaping his future dreams, and the girl he fell in love with at first sight is his girlfriend. When he starts to feel tired and doubtful about himself, he ends up reading a diary dropped by his girlfriend. It contains a story that drives the world further into chaos and spinning out of control.