

70 minSeason 1 • Episode 12
LatestBan Do refuses to see Jin Joo after his accident. Ban Do tells Jin Joo to forget about going back to the present and continue living in the past with her family. Jae Woo works hard for his audition for nationals. He wants to give up but doesn't for the sake of Bo Reum. Meanwhile, Bo Reum sees his efforts and makes a decision.
Having married young, when frustration with their lives make Choi Ban-du and Ma Jin-joo regret their marriage of 18 years, a strange occurrence has them traveling back in time to the day before they met and into their younger selves.
Acting
Jang Na-ra plays 20 and 38 flawlessly—you feel every year.
Writing
The webtoon adaptation nails married-couple banter and buried grief.
Direction
Ha Byung-hoon balances absurd comedy with devastating emotional beats.
Trivia, insights & behind the scenes
Jang Na-ra was 36 playing 20 and 38; her real-life age ambiguity became a running joke on set. She reportedly asked for fewer close-ups in the college scenes.
The 'go back' premise resonated with Korea's '880,000 won generation'—young adults trapped between failed expectations and economic reality. The 2002 college setting isn't random; it's when this demographic's dreams died.