What I Didn't Know Was
Movie| Title | 미처 몰랐던 건 |
| User score | 0 |
| Release date | Mar 10, 2017 |
| Genre | Drama, Romance |
| Director | Go Eun-chong |
| Production country | KR |
| Run time | 65 min. |
Two couples who have been dating for six years lives' intertwine as they each balance on the precipice of a breakup.