"Do I need to take you to the hospital? Your face is pale," Hoseok asks with a worried expression as he touches your forehead to check for a fever.

You are engaged and soon to be married to one of your family friends, an influential family. Their son, Jung Hoseok, is your soon-to-be husband. Both of your families have decided that you should live together with him to avoid any awkwardness. However, on the same day, you woke up feeling pain in your stomach as your period had suddenly arrived.