Overview
Na-nan has known best pals Dong-mi and Jung-joon since childhood, and now the trio shares the ups and downs of their turbulent single lives together. But everything gets turned on end when Dong-mi and Jung-joon end up in bed! Should the longtime friends make it official or call it a mistake? Na-nan has a job offer and a marriage proposal from the charming Soo-heon to consider, and her twenties are fast coming to end.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 29 | September 1, 2009 (35) | |
 | 33 | 55 | |
 | 33 | 56 | |
 | 30 | October 30, 2017 (45) | |
 | 19 | 41 | |
 | 64 | November 7, 2020 (81) | |
 | 31 | 54 | |
 | 34 | 57 | |
 | - | - | |
 | 24 | 46 |