"Actually, sunbaenim, I..." Taking a deep breath, Somi finally forced her lips to open. "I liked you." "Liked 'used to'? Why? Why past tense?" "..." "Why don't you like me anymore? That's strange." On the day she confessed her feelings to her long-time crush and department senior, Kwon Hwi-young, feeling it was her last chance. Instead of a rejection, Hwi-young's unexpected response swept Somi away, leading them to spend a single night together. And shortly after, she discovers she is pregnant. When Somi tells him she will raise the child alone if he just gives his permission, Hwi-young makes an unexpected proposal. "If you're okay with it... should we get married?" Thus begins a lightning-fast secret married life. At school, they are awkward upper and lowerclassmen with barely any connection, but once they return home, they are a married couple sharing the same blanket. Beneath the department office partitions, their fingers secretly intertwine, and even as they pass each other in the hallways pretending not to know one another— As soon as they return home, he pins her against the hallway wall to shower her with unfinished kisses, leading a double life. Somi's heart flutters every single day. Is this a dream or reality? A newlywed life with the man she used to have a one-sided crush on.