After completing his residency, Seol-Won opened an ophthalmology clinic in his hometown of Seosan. While visiting home, he decided to spend the holiday at a mountain villa with old friends from his hometown. However, his friends had to postpone their visit to the villa until the next day, leaving Seol-Won to spend the night alone at the villa. What woke Seol-Won from his sleep was the sound of an unfamiliar intruder. Filled with fear, Seol-Won tried contacting his friends and the police, but... "I'm really sorry. We can't get the car in right now.""Caller! Due to heavy snowfall, access to the mountain is currently difficult!"
...He was isolated. And that too, alone with the unfamiliar intruder, Alpha Gu-Ju.(Source: Ridibooks, translated)
— Description from AniList community (anilist.co).
