It seems like the rumors are true!
In the latest preview for JTBC4's 'Secret Unnie', a staff member comments to Taeyeon, "There are rumors about you coming on 'Secret Unnie'." To this, Taeyeon replied, "I know right? With HyunA."
'Secret Unnie' then states the secret between Taeyeon x HyunA will be revealed soon.
Prior to this, Taeyeon and HyunA made fans super excited by unexpectedly showing communication via Instagram.
Are HyunA and Taeyeon really the next dongsaeng-unnie match for the show?