-IU!
-Moon Geunyoung is the original 'The Nation's Younger Sister'
-Moon Geunyoung and IU
-Oh... I personally think it's Park Boyoung
-Suzy
-Moon Geunyeoung and Kim Yuna
-Suzy? IU?
-I immediately think of IU during her Good Day era...
-Moon Geunyoung, Sohee, and IU. Suzy is The Nation's First Love!
-Moon Geunyoung because Suzy is The Nation's First Love
-Ahn Sohee...
-I know the post asks for 'The Nation's Younger Sister', but why do I think of Yeo Jin-goo?
-Hul... I think it's Park Boyoung or Kim Yoojung
-It's still Moon Geunyoung for me...
