- Her Zodiac sign is Leo.
- Her hobbies are: dancing and working out.
- She was born in Seoul, but grew up in Hyoseong-dong, Incheon.
- Her ideal type is Lee Hyun Woo.
- She is the only member to debut under her real name.
- Yerin’s nickname is "Ginseng" because she wants to be the one who gives her members energy.
- She doesn't like vegetables and doesn't cook.
- She made her solo debut on variety shows just 6 weeks after debut.
- Unlike Sowon, she is the most flexible member in the group. She is the only member to successfully perform a straddle vault. The move was later added to the choreography of Me Gustas Tu.
- She was the MC of SBS The Show! when GFriend won their first No.1 for Rough in 2016.
- She is a big fan of SHINee and SNSD.
- She was trained in Fantagio for 2 years with Yoojung of Weki Meki.
- She was the first members to be GFriend's debut lineup with Sowon.
- Yerin and Eunha cry the easiest.
- She’s a fan of manga and anime.
- Her favorite anime is One Piece.
- Her special talent is flipping pancakes.
- Her older brother is 10 years older than her, and he was enlisted in special forces, so he was never discharged for 4 years, and she never seen him in her elementary school days. He also later studied in the US, so she was raised as if she was an only-child.
- She briefly took over as leader in June 2018 because Sowon took bereavement leave for her father's passing. Yerin mostly took over leading the greetings.
- On the first day of Season of GFriend, she performed Lee Hyori's "U Go Girl" for her solo stage.
- She clarified in a VLive broadcast that she actually born in Seoul, not Incheon. Source
- Her fetal name is 시원이 meaning cool/live a comfortable life.
- She prefers Sowon as a driver because she can comfortably sleep in the car, despite SinB being the better driver.
- She had the biggest appetite in the group.
- She likes Gorgonzola pizza with honey.
- Seventeen 'Superlatives' interview
- Yerin received two votes (Eunha, Yuju) on who's the funniest.
- 1theK Chemitest - preference after breakup (Yerin's choices in "bold")
- Hair: Cut or "No"
- After parting: "Under the rain without an umbrella" or Broken heels
- Endless chatting or "crying"
- Delete the phone number or "pictures"
- Song after breakup: We should've been friends or "I'll get lost, you go on your way"
- Expensive couple items: "Throw away" or Keep them
- Lingering breakup with the ex: Hold or "Let him go"
- One month later, blind date: "Do" or Not
- Relationship status of the messenger: "Free relationship" or In the middle of breakup