Coffee Bay is a real coffee and dessert chain in Korea.
Jang So-yeon (Seo Kyeong-seo) and Son Ye-jin (Yoon Jin-Ah) appear together again in Crash Landing on You.
Actors Jeong Eu-Gene (playing Yoon Jin-Ah's coworker Kang Se-young) and Wi Ha-joon (playing Yoon Jin-Ah's brother Yoon Seung-ho) never have a scene together in this movie despite the size of their roles. They go on to co-star in the movie Romance Is a Bonus Book the following year.