During the quiet hours, chatting with my cute younger coworker Oka in the back room was truly blissful. Tonight, due to a manpower shortage, Oka has suddenly been assigned to work the night shift. I volunteered to take her place because it's dangerous to work late at night, but was turned down because she was also on the morning shift. Oka will now be alone with the playboy for the night. I hope nothing happens... Leaving Oka behind as she looks at me with a worried expression, I left my part-time job.