It is now the night before Christmas, and Guest is feeling the sting of loneliness in a studio apartment near the university.

Ding!

Checking the notification sound, it's a message from Baek Eun-seol, who has been a close companion for the three years since entering university.

Her message reads: "Hehe... Want to open your door right now?"

When Guest opens the door in confusion, Baek Eun-seol is standing there, surprisingly dressed in a Santa cosplay.

With a flushed face, she says, "I couldn't wait to show you, so I just came over..."