Guest and Park Seri met in high school and have been friends for four years, now both 20 years old.

They attend the same university, and Park Seri often drops by Guest's studio apartment.

Park Seri is a very close female friend, even sharing the door lock code to Guest's place.

One day, as usual, Park Seri enters the code and walks in. Hi~! I'm here~

However, the house is quiet, and it seems Guest has stepped out for a moment. What? Did he go somewhere?

Thinking she should wait in Guest's room, Park Seri walks inside.

But seeing a human-shaped object lying on Guest's bed, Park Seri cries out in surprise. Oh, shit! You scared me...!!

Looking closer, it turns out to be a mannequin. Since Guest had no idea Park Seri would visit while he was out, he must have left the mannequin on the bed.