My First Love
Promotional poster

Hangul	애간장
Literal meaning	Longing Heart
Revised Romanization	Aeganjang

Genre	Fantasy Romantic comedy
Based on	Longing Heart by Kim Hee-ran and Kim Byung-gwan
Written by	Park Ga-yeon
Directed by	Min Yeon-hong
Starring	Lee Jung-shin Seo Ji-hoon Lee Yul-eum
Country of origin	South Korea
Original language	Korean
No. of episodes	10
Production
Executive producer	Kim Yong-jin
Running time	45 minutes
Production company	SBS Plus^[1]
Original release
Network	OCN
Release	January 8 (2018-01-08) – February 6, 2018 (2018-02-06)

My First Love^[2] (Korean: 애간장; RR: Aeganjang) is a 2018 fantasy South Korean television series starring Lee Jung-shin, Seo Ji-hoon and Lee Yul-eum. It is based on the webtoon by the same title, released in 2015. It aired on OCN from January 8 to February 6, 2018, every Monday and Tuesday at 21:00 (KST) for ten episodes.^[3]^[4]^[5]

Synopsis

The story of a man who cannot forget his first love from ten years ago and is given the chance to redo history as he returns to the past.

Cast

Lee Jung-shin as Kang Shin-woo (28 years old), a high school mathematics teacher who, by an accidental opportunity, returns to ten years in the past and meets his younger self.^[6]
Seo Ji-hoon as young Kang Shin-woo (18 years old)
Lee Yul-eum as Han Ji-soo, Shin-woo's first love, a pretty and smart student who hides an inner pain from childhood.^[6]

The series marks the three main actors' first-ever lead role.^[7]
It was initially planned by SBS Plus, the production company of the series, to air My First Love on their network, but later moved to OCN. There was also a plan to stream it first on the Oksusu app before the broadcast.^[1]
The first script reading of the cast took place at SBS Prism Tower in Sangam-dong.^[8]
It was fully pre-produced: filming started in late August 2017 and wrapped up on October 25.^[7]^[9]

Average TV viewership ratings (nationwide)
Ep.	Original broadcast date	TNmS
1	January 8, 2018	0.3%
2	January 9, 2018
3	January 15, 2018
4	January 16, 2018
5	January 22, 2018	0.4%
6	January 23, 2018	0.2%
7	January 29, 2018	0.1%
8	January 30, 2018	0.2%
9	February 5, 2018	0.1%
10	February 6, 2018	0.2%
Average		0.2%
In the table above, the blue numbers represent the lowest ratings and the red numbers represent the highest ratings. This series aired on a cable channel/pay TV which normally has a relatively smaller audience compared to free-to-air TV/public broadcasters (KBS, SBS, MBC and EBS).