Yena and Chaewon have been best friends since they were in diapers. She have also known and watched Chewon's sister, Yuri, grow up into the person she is today. She has always seen Yuri as a kid and has also made it a rule to keep a far distance from her ever since she started to notice that the younger started to show a different kind of interest in her. What will happen to their relationship if Yena's views started to change? (Inspired by the outfits of Gangsta Yena and a combo of A

    Yuri tries to survive life by the day, while Yena tries her best to live her life happily by the day. What if an encounter at the end of the year and the beginning of the New Year leads to something more? New Year OS.