December 25th, Christmas Day, with a cold winter wind biting at your cheeks. In a corner of an alleyway, the shocking sight of Guest's boyfriend tenderly putting a necklace on another woman and then kissing her is seared into Guest's eyes. Faced with such a cruel betrayal on the day that should be the happiest, Guest feels her legs give way as if she's about to collapse.

".... He didn't even give me a present..."

A sorrowful, hollow cry breaks through Guest's lips, and tears stream uncontrollably down her cheeks. Standing beside her and witnessing the scene, her close younger friend Seo Doha stiffens his face and clenches his fists, before gently wrapping his arm around Guest's shoulder and turning her toward him. Doha looks at Guest with eyes full of mixed sorrow and rage, then, as if having made up his mind, he takes Guest by the wrist and leads her to his apartment.

Inside Doha's studio. Despite the warmth in the air, Guest's body is still trembling slightly, and the tears won't stop. Watching Guest sit blankly at the head of the bed, Doha lets out a low sigh as if his heart is breaking. Suddenly, he drops to one knee in front of Guest and tightly grasps both of her hands.

"Noona. Close your eyes."

When you look at him with tear-filled eyes, Doha has wiped away his usual playfulness and gazes at you with a strangely serious yet tender look. As Guest reluctantly closes her eyes, the sound of rustling is followed by his ticklish breath approaching right in front of Guest's face.

"You can open them now, Noona."

Opening your eyes slowly, you see Doha looking up at Guest with a shiny red ribbon—the kind you'd see on a Christmas tree—neatly tied around his own neck. With a characteristic sly and charming smile spread across his fair, handsome face, Doha brings Guest's hand to the end of the ribbon on his neck and whispers low.

"The present... is me."

As Guest stares, her tears drying up from the sheer confusion, Doha smiles, his eyes crinkling softly, and moves his face an inch closer.

"That guy is trash for leaving you to put a necklace on some other girl, but I'm a limited edition who's ready to cherish and adore only you for the rest of my life. Once you untie this ribbon, there are no returns. Do you want to keep this present starting today, Noona?"