Season 1 of Odd Girl Out premiered on May 17, 2015 on Naver Webtoon and ended on September 9, 2019. The English translation was released on July 11, 2018 and ended on July 6, 2020. There are 214 episodes in total.
| Title Logo (EN version) | Episode | Title | Summary | Release Date |
|---|---|---|---|---|
|
1 | FIRST DAY OF SCHOOL | On her first day of high school, Nari accidentally befriends the three prettiest girls in school. | KR: May 5, 2018
EN: July 11, 2018 |
| 2 | AN UGLY DUCKLING | Yuna, Mirae and Seonji continue hanging out with Nari, despite Nari not wanting to be with them because she feels ugly. | KR: May 25, 2015
EN: July 11, 2018 | |
| 3 | DON'T LOOK AT ME WITH THOSE SAD EYES (PART 1) | KR: May 31, 2018
EN: July 11, 2018 | ||
| 4 | DON'T LOOK AT ME WITH THOSE SAD EYES (PART 2) | KR: June 6, 2015
EN: July 12, 2018 | ||
| 5 | MISTAKE | KR: June 14, 2015
EN: July 13, 2018 | ||
| 6 | TORTOISE CANDY ON WHITE DAY (PART 1) | Nari, Yuna and Mirae help pack tortoise chocolates for White Day. | KR: June 6, 2015
EN: July 14, 2018 | |
| 7 | TORTOISE CANDY ON WHITE DAY (PART 2) | Due to Yuna and Mirae's help, the tortoise chocolates sold out for the first time on White Day. | KR: June 28, 2015
EN: July 15, 2018 | |
| 8 | I NEED TO BE ADAMANT (PART 1) | KR:
EN: July 16, 2018 | ||
| 9 | I NEED TO BE ADAMANT (PART 2) | KR:
EN: July 17, 2018 | ||
| 10 | LEARNING THROUGH EXPERIENCE | KR:
EN: July 18, 2018 | ||
| 11 | A DEPRESSING DAY | KR:
EN: July 19, 2018 | ||
| 12 | EXCITEMENT | KR:
EN: July 20, 2018 | ||
| 13 | I LOOK PRETTY...? | KR:
EN: July 21, 2018 | ||
| 14 | GROUP PROJECT (PART 1) | KR:
EN: July 22, 2018 | ||
| 15 | GROUP PROJECT (PART 2) | KR:
EN: July 23, 2018 | ||
| 16 | A BAD FEELING | KR:
EN: July 24, 2018 | ||
| 17 | TRANSFORMATION (PART 1) | Nari's younger cousin, Youngju, gives Nari makeup to try on so she can look prettier for Minjae. | KR:
EN: July 25, 2018 | |
| 18 | TRANSFORMATION (PART 2) | Nari comes to school with makeup on, but is laughed at because it doesn't look nice. Her friends give her a makeover and make her look pretty. | KR:
EN: July 26, 2018 | |
| 19 | TRANSFORMATION (PART 3) | KR:
EN: July 27, 2018 | ||
| 20 | NATURAL ENEMY | KR:
EN: July 28, 2018 | ||
| 21 | A NEW NICKNAME | KR:
EN: July 29, 2018 | ||
| 22 | PRELUDE | KR:
EN: July 30, 2018 | ||
| 23 | THE FOOD CHAIN (PART 1) | KR:
EN: July 31, 2018 | ||
| 24 | THE FOOD CHAIN (PART 2) | KR:
EN: August 1, 2018 | ||
| 25 | UPHEAVAL (PART 1) | KR:
EN: August 2, 2018 | ||
| 26 | UPHEAVAL (PART 2) | KR:
EN: August 3, 2018 | ||
| 27 | UPHEAVAL (PART 3) | KR:
EN: August 4, 2018 | ||
| 28 | THREE-WAY MEETING (PART 1) | KR:
EN: August 5, 2018 | ||
| 29 | THREE-WAY MEETING (PART 2) | Seo Yoo says goodbye to Nari, but Yuna intervenes, calling his dad to take him away. He says Nari isn't anything special to look at, which motivates Nari to cut off Yuna, Mirae and Seonji because she feels inferior to them. | KR:
EN: August 6, 2018 | |
| 30 | THE DUCK AND THE SWANS | Nari tells Yuna, Mirae and Seonji to stop hanging out with her because Nari doesn't feel like she should be hanging out with the prettiest girls in school and wants to hang out with more "ordinary" people. | KR:
EN: August 7, 2018 | |
| 31 | SIDE STORY 1. THE GIFT | |||
| 32 | ISOLATION (PART 1) | |||
| 33 | ISOLATION (PART 2) | |||
| 34 | ISOLATION (PART 3) | |||
| 35 | REALIZATION | |||
| 36 | CHANGES | |||
| 37 | REUNION | |||
| 38 | AFTER THE STORM | |||
| 39 | THE END | Nari meets Seo Yoo, who is going to move to the U.S. and he apologizes again. Nari doesn't accept his apology and he gets aggressive. Nari's family steps in and saves her. This is the end of the Seo Yoo arc. | ||
| 40 | THE AND | Bin copies Yuna's hairstyle. Yuna doesn't show up to school. On her way home, Nari sees Yuna waiting for her and they talk about Seo Yoo and if Nari will ever be liked back. At the end, a dark-haired boy walks past them (presumably Seungha Kwon before his character was finalized). |