Yong-jun werkt parttime bij een lunchbox bezorgservice van zijn ouders. Yeo-reum leeft alleen ter ondersteuning van de slechthorende zus. Op een dag ontmoet Yong-jun Yeo-reum terwijl hij lunchpakketten bezorgt en wordt op haar verliefd.
Nee, helaas is 청설 nog niet beschikbaar op Netflix in Nederland.
| Sound | 조영욱 | Original Music Composer |
| Production | 양수정 | Producer |
| Directing | 조선호 | Director |
| Writing | 조선호 | Writer |
| Editing | 김선민 | Editor |
| Camera | 강민우 | Director of Photography |
| Writing | Cheng Fenfen | Original Film Writer |
| Production | Lee Ji-hyeon | Line Producer |
| Writing | Ham Bo-ram | Storyboard |
| Directing | Jung A-won | Script Supervisor |
| Directing | Lee Gyeong-won | Assistant Director |
| Writing | 나재원 | Writer |
| Writing | 곽경윤 | Writer |
| Writing | 조선호 | Adaptation |
| Lighting | 이승호 | Lighting Director |
| Sound | 구종률 | Production Sound Mixer |
| Art | Kim Deok-soon | Production Design |
| Costume & Make-Up | 이서진 | Makeup & Hair |
| Sound | 김석원 | Sound Supervisor |
| Production | 김재중 | Executive Producer |
| Art | 김기환 | Set Decoration |
| Art | 박성윤 | Props |
| Costume & Make-Up | 윤혜인 | Costume Design |
| Visual Effects | Park Dae-hun | Special Effects Supervisor |
| Visual Effects | 김창규 | Special Effects Supervisor |
| Crew | Kim Cha-i | Martial Arts Choreographer |
| Crew | 최재옥 | Martial Arts Choreographer |
| Editing | 우찬양 | Digital Intermediate |
| Camera | Park Ji-seul | Key Grip |
| Visual Effects | 황용태 | VFX Supervisor |
