Trailer
One day at an office, one of the employees buys a mysterious calendar marked with a strange exchange symbol on the 10th of every month.
When the 10th finally arrives, Miura-kun wakes up in the female body of one of his coworkers. At first, he refuses to go to work, but an inexplicable urge compels him to do so—leading to a series of strange and unsettling events upon his arrival.
From that day on, every 10th of the month brings new body swaps within the office. The employees have no memory of what happens on those days… but this is only the beginning of their troubles.