On Christmas Day, 14 years ago, Joonyoung and Eunhyuk became step brothers after their parents remarried. However, their parents soon passed away in a car accident and Eunhyuk became the only person Joonyoung could depend on. To Joonyoung, Eunhyuk was the perfect guardian as well as savior. But upon a certain incident, Eunhyuk's existence took on a different meaning to Joonyoung. That incident had Joonyoung leaving Eunhyuk's side as if he was running away, and now that 6 years have passed, he ends up reuniting with Eunhyuk at a hotel. As Eunhyuk, who had desperately looked for Joonyoung, finds and warmly hugs his little brother, his eyes show nothing but iciness unlike the warmth of his embrace...

Based on a novel with the same name

Original Webtoon:
Bomtoon
Lezhin
Ridibooks

Note:
The series is part of Bomtoon 2020 Christmas specials, Lezhin has the collection under as Hotel Christmas(호텔 크리스마스 단편선_페니스 나비다) that include other stories by different authors:
Christmas Revenge;
Emergency Stairway;
How to Use Men;
In the Hotel, on the Bed;
Love Script;
My X-MAS Report;
Punch Drunken Love;
Santa Keeps Granting Wishes;
The Next Schedule Is in Room 2501;
Un-holy Night