f(x) posed with their TVXQ oppas at the backstage of Music Bank!

f(x) made their comeback on Music Bank earlier today with their latest title track "Pinocchio".

TVXQ also had a marvelous performance of their latest hit song "Keep Your Head Down" as well as their popular old song "Rising Sun".

ChangMin and Yunho helped to promote the girls' album too,SM bond revealed once again!