Feel Special is all about
Jihyo (from dating)
Sana (from hate comments)
Mina (from anxiety)
Tzuyu (from flag issue) then
Nayeon, Dahyun, Chaeyoung and Momo came to them.
Jeongyeon is all by her self because she is the guardian of them.
Remember Sana said in vlive, this concept has never done by any girl groups before. because it's all about them, It's all about TWICE