Blue Birthday Season 1
01. My Bad Birthday
Kim Yi-seo
Ji Hye-min
Lee Sang-jun
Cha Eun-seong
Kim Gyeol-yu
Doh Su-jin
Ju Hyeon
Kim Ui-yeong
Yeri
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
02. You're in My Dream
Yeri
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
Lee Sang-jun
Cha Eun-seong
Kim Gyeol-yu
Do Su-jin
Ju Hyeon
Kim Ui-yeong
03. Lively Ordinary Days
Yeri
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
Lee Sang-jun
Cha Eun-seong
Kim Yi-seo
Ji Hye-min
Kim Gyeol-yu
Do Su-jin
Lee Dong-ju
Kim Sin-u
Ju Hyeon
Kim Ui-yeong
04. Rule of Equivalent Exchange
Yeri
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
Lee Sang-jun
Cha Eun-seong
Kim Yi-seo
Ji Hye-min
Kim Gyeol-yu
Do Su-jin
Ju Hyeon
Kim Ui-yeong
05. Another Chance
Yeri
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
Lee Sang-jun
Cha Eun-seong
Kim Yi-seo
Ji Hye-min
Kim Gyeol-yu
Do Su-jin
Ju Hyeon
Kim Ui-yeong
06. What Happened That Day
Yeri
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
Lee Sang-jun
Cha Eun-seong
Kim Yi-seo
Ji Hye-min
Kim Gyeol-yu
Do Su-jin
Lee Dong-ju
Kim Sin-u
Ju Hyeon
Kim Ui-yeong
07. It's You, Isn't It?
Yeri
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
Lee Sang-jun
Cha Eun-seong
Kim Gyeol-yu
Do Su-jin
Ju Hyeon
Kim Ui-yeong
08. Crisis
Yeri
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
Lee Sang-jun
Cha Eun-seong
Kim Gyeol-yu
Do Su-jin
Lee Dong-ju
Kim Sin-u
Ju Hyeon
Kim Ui-yeong
09. Witness
Yeri
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
Lee Sang-jun
Cha Eun-seong
Kim Yi-seo
Ji Hye-min
Kim Gyeol-yu
Do Su-jin
Lee Dong-ju
Kim Sin-u
Ju Hyeon
Kim Ui-yeong
10. If We Have Such A Big Misfortune
Yeri
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
Lee Sang-jun
Cha Eun-seong
Kim Yi-seo
Ji Hye-min
Kim Gyeol-yu
Do Su-jin
Ju Hyeon
Kim Ui-yeong
11. You and I
Yeri
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
Lee Sang-jun
Cha Eun-seong
Kim Yi-seo
Ji Hye-min
Kim Gyeol-yu
Do Su-jin
Ju Hyeon
Kim Ui-yeong
12. Suspicion
Yeri
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
Lee Sang-jun
Cha Eun-seong
Kim Yi-seo
Ji Hye-min
Kim Gyeol-yu
Do Su-jin
Lee Dong-ju
Kim Sin-u
Ju Hyeon
Kim Ui-yeong
13. Abandoned Girl
Yeri
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
Lee Sang-jun
Cha Eun-seong
Kim Yi-seo
Ji Hye-min
Kim Gyeol-yu
Do Su-jin
Ju Hyeon
Kim Ui-yeong
14. Never Regret
Yeri
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
Lee Sang-jun
Cha Eun-seong
Kim Yi-seo
Ji Hye-min
Kim Gyeol-yu
Do Su-jin
Ju Hyeon
Kim Ui-yeong
15. Disappear
Yeri
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
Lee Sang-jun
Cha Eun-seong
Kim Yi-seo
Ji Hye-min
Kim Gyeol-yu
Do Su-jin
Ju Hyeon
Kim Ui-yeong
16. My Blue Birthday
Yeri
Oh Ha-rin
Yang Hong-seok
Ji Seo-jun
Lee Sang-jun
Cha Eun-seong
Kim Yi-seo
Ji Hye-min
Kim Gyeol-yu
Do Su-jin
Ju Hyeon
Kim Ui-yeong