A story that continues to grow with us. The story of Araragi Koyomi ends. Starting with a hellish spring break, after various coincidences, Araragi Koyomi's last year of high school life has ended - that's what he thought. But on the morning of the day after the graduation ceremony, something unexpected happened. Koyomi lost himself in the world in the mirror. This is the story of the end and continuation that Araragi Koyomi experienced at this stage when he was neither a high school student nor a college student. The morning after the high school graduation ceremony. Koyomi, who was facing the washstand mirror while preparing to wash his face, fell into the feeling that his reflection was staring at him. He couldn't help but touch the mirror with his hand, and his fingertips sank into it... When he came to his senses, Koyomi was already in a world where everything was reversed.