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College student Lee Won-jun moves into a sharehouse, and meets a beautiful yet strangely familiar housemate — but they get off on the wrong foot.

Gradually, Lee Doona gets acquainted with Won-jun’s social circle. He later celebrates Doona's birthday, attempting to get to know her better.

Alone in her room, Doona feels unsafe — like she's being watched. Won-jun and Kim Jin-ju go out to see the cherry blossoms, but it starts to pour.

Won-jun and Doona grab a late-night meal, experiencing their first paparazzi moment. Much to his disdain, Won-jun accidentally reunites with an old foe.

A confused Won-jun confronts Doona about the sudden kiss. New housemates move into the sharehouse, making the place livelier than ever.

Doona secretly visits Dream Sweet’s showcase event. Later, she invites Won-jun on a spontaneous trip to her childhood home.

After the return of a person from her past, Doona makes a rash decision. Won-jun later confronts Doona in a moment of pain and frustration.

As Won-jun and Doona's relationship flourishes, a chance at a comeback comes knocking on Doona's door — but so do the tough choices.

Won-jun moves into a new apartment and focuses on his studies. Meanwhile, Doona's career soars as she finds newfound confidence.