As Tae-in moved away suddenly, Do-ha embarked on a long-distance relationship that certainly wasn't planned. Although they talk to each other daily and constantly through KakaoTalk and video chat, they all never enough in fully expressing his love for her. So he secretly plans to propose to her. But for some reason, Tae-in contacts him less and less often. Do-ha feels his trust and confidence in their love breaking down slowly...
Is Long D on Netflix? Unfortunately the movie Long D is not yet available on Netflix.
| Directing | Lim Jae-wan | Director |
| Production | Timur Bekmambetov | Producer |
| Visual Effects | Lee Eun-mi | VFX Supervisor |
| Camera | Yun Jong-ho | Director of Photography |
| Writing | Wang Hye-ji | Writer |
| Crew | Lee Sang-min | Martial Arts Choreographer |
| Production | Yi Jae-min | Producer |
| Lighting | Jung Hoon | Lighting Director |
| Sound | Gong Tae-won | Sound Supervisor |
| Writing | Hyung Seul-woo | Writer |
| Costume & Make-Up | Kim Yun-hui | Makeup & Hair |
| Production | Yeon Dong-eun | Executive Producer |
| Costume & Make-Up | Kim Da-jung | Costume Design |
| Sound | Seo Ji-hoon | Production Sound Mixer |
| Art | Choi Im | Production Design |
| Editing | Han Eon-jae | Editor |
| Editing | Hong Woo-sin | Editor |
| Sound | Shin Ye-jun | Music |
