| Original run: | 28.08.2017 — 08.09.2017 |
| Country of origin: | South Korea |
| Genre: | Comedy, Fantasy, Romance/Dating |
| Network: | jTBC |
| Watched by: | 1 109 867 032 |
| Total running time: | 2 hours 30 minutes |
| Episode duration: | 15 min. |
| Episodes count: | 10 |
| IMDB rating: | 7.7 of 10 305 |
| kinopoisk.ru rating: | 7.191 of 10 1 092 |
Kyung Hwi was bullied when he was high school student. At that time, he liked Na Bi. She was his first love, but she died. Now Kyung Hwi is a resident in orthopedics. To save Na Bi, Kyung Hwi travels back in time to when he was 18 years old.
