A boarding high school with a history of a hundred years, the campus was built on the site of the Women's Normal School during the Republic of China.
The bell of the seventh period every afternoon completely coincides with a fixed moment a hundred years ago, becoming a brief rift between the yin and yang worlds.
The school has an "unwritten school rule" that has been circulating for 30 years. After the seventh period, you should not stay alone in an empty classroom for more than seven minutes. Violators will "see something they shouldn't see," and after seeing it, they must get rid of their obsession with that "thing" within seven days, otherwise they will become the next "thing."
Intent: The dusty history is not the past, it is proof that some people are still alive.
