Dear My Family Vio ft SM TOWN

Vio as solo part of BoA, Taeyeon of Girls' Generation, Luna of f(x) and two chorus. The rest is Kangta, TVXQ, Yesung of Super Junior, Jonghyun of Shinee,and Luhan, Chen, Baekhyun, and D.O of EXO.
Can you guess where is …