For the first time in her life, Im Sei ends up visiting her mother’s friend’s house, who just happens to be the Executive Director of a major department store. She was offered a tutoring job for the woman’s youngest son, expecting a normal, if luxurious, gig.

However, as Sei heads up to the second floor to meet her new student, she accidentally walks in on the eldest son, Tae Seungjoo, completely naked! Branded a pervert and kept under Seungjoo’s intense “surveillance” for an entire year, she finally manages to complete the tutoring job and thinks she’s free.

But her mother’s friend presents her with a new offer she literally can’t refuse: “Sei, please keep an eye on my son Seungjoo.” Despite Sei's gut feeling—admitting, “I’m sorry, ma’am… but I think your son might be… a bit of a crazy bastard.”—she finds herself dangerously entangled with the powerful and intense Seungjoo. Get ready for a high-stakes, mature romance where boundaries are tested and observation quickly turns into obsession.

/ Alternatives: 엄마친구아들 관찰기