ครั้งหนึ่ง...ซึ่งคิดถึงตลอดไป

장기하 as Hae Sung's Friend 1 Isaac Powell as Guy (voice) 최원영 as Nora's Dad Seo Yeon-woo as Young Si Young 신희철 as Hae Sung's Friend 2 박준혁 as Hae Sung's Friend 3 Jack Alberts as CBP Officer Jane Yubin Kim as Actress Emily Cass McDonnell as Rachel Federico Rodriguez as Robert 유태오 as Hae Sung John Magaro as Arthur 윤지혜 as Nora's Mom 황승언 as Hae Sung's Girlfriend Jojo T. Gibbs as Janice Conrad Schott as Peter Kristen Sieh as Heather Oge Agulué as Ferry Line Security Guard 문승아 as Young Nora 임승민 as Young Hae Sung 안민영 as Hae Sung's Mom Chase Sui Wonders as Girl (voice) Greta Lee as Nora

Elizabeth Hay Casting Assistant Kelsey Sasportas Wardrobe Supervisor Pamela Koffler Producer Declan Mulvey Stunt Coordinator Bo Burnham Thanks Christine Vachon Producer Celine Song Executive Producer, Director, Writer Yeonu Choi Co-Executive Producer Zac Gobetz Finishing Producer สตีเว่น ยอน Thanks Taylor Shung Executive Producer Keith Fraase Editor Grace Yun Production Design Cherelle Cargill ADR Voice Casting David Hinojosa Producer 이미경 Executive Producer Daniel Rossen Original Music Composer Jon Pack Still Photographer Ellen Chenoweth Casting Christine D'Souza Gelb Executive Producer Christopher Bear Original Music Composer Nitasha Bhambree Stunt Coordinator