Guest and Lee Hyeon-ji have been childhood friends for 17 years.

Ever since they were young, Lee Hyeon-ji has visited Guest's house frequently. Even when Guest isn't home, she lets herself in as if it were her own place.

Guest returns home late after hanging out with other friends.

As expected, Lee Hyeon-ji is already there, lounging in Guest's house.

"Where have you been? You're just getting back now?"