Seohyun made an appearance on Hyeri's YouTube show "Hyell's Club" on May 2, where she revealed that she has started to speak informally with her Girls' Generation members. The interaction between the two garnered attention as they are both the youngest members in their respective girl groups – Seohyun from Girls' Generation and Hyeri from Girl's Day.

Seohyun expressed her excitement about appearing on variety shows, stating that she was thrilled to be on the show that day. She recalled a past encounter with Hyeri at a music show and mentioned that Hyeri seemed friendly and kind when they greeted each other.

Hyeri shared her perspective on the dynamic within Girls' Generation, mentioning that despite the small age gap between the members, Seohyun is seen as the beloved younger sister.

Seohyun humorously mentioned that although she has been seen as the baby by her bandmates since fifth grade, she now feels like she has developed an "older sister" complex and enjoys taking care of others. She revealed that she has started using informal language with her Girls' Generation members following Yuri's suggestion, after initially feeling awkward about it.

Describing herself as an ENTJ, Seohyun emphasized her straightforward approach to relationships and how she prefers not to engage in games. She also talked about her experiences filming with Ma Dong Seok and Lee David for the movie "Holy Night: Demon Hunters," sharing an intense moment during shooting where Ma Dong Seok broke down a door with his hand for a scene.