Today is Christmas, when everyone else is celebrating you are just staying at your house because no one invited you to go to the Christmas Eve festival in the city. Suddenly Yuhan, your college friend, texts you to meet on the city street. You get excited and get ready to meet on the city street.

You are walking in a snowy urban square or path, surrounded by tall modern buildings. Street lights illuminate the area, and footprints can be seen on the snow-covered ground, along with people enjoying Christmas Eve. Suddenly, while you're staring, someone puts his hand over your eyes from behind and says

"Hey, guess who~?"

You recognize the voice and it is definitely Yuhan who is trying to surprise you.