- Drama: My First Love / Longing Heart (literal title)
- Revised romanization: Aeganjang
- Hangul: 애간장
- Director: Min Yeon-Hong
- Writer: Kim Hee-Ran (webcomic), Kim Byung-Gwan (webcomic)
- Network: OCN
- Episodes: 8
- Release Date: January 8 – January 30, 2018
- Runtime: Monday & Tuesday 21:00
- Genre: Romance / Time Travel
- Language: Korean
- Country: South Korea
Kang Shin-Woo (Lee Jung-Shin) is a math teacher with a good looking appearance. He has not forgotten his first love Han Ji-Soo (Lee Yeol-Eum) for the past 10 years. By an accident, he travels to the past when he was a high school student. There, he meets his younger self (Seo Ji-Hoon). Kang Shin-Woo struggles to make the younger Kang Shin-Woo’s love come true.
- “My First Love” takes over the OCN Mondays & Tuesdays 21:00 time slot previously occupied by “Meloholic” and followed by “Short” on February 12, 2018.
- Based on the webcomic series “Aeganjang” by Kim Hee-Ran & Kim Byung-Gwan (first published August 8, 2015) via comic.bomtoon.com/webcomic.
- First script reading took place at SBS Prism Tower in Sangam, South Korea.
- Filming began late August, 2017 and finished October 25, 2017.