IU korean singer sexual expression about child?

IU - ZEZE

IU korean singer released  new song 'zeze' one of child character in korea fairy tale.
The song had problem about sexual expression about child in korea . so many people
  criticize her.

IU is one of most popular singer in korea.

But after releasing the song 'zeze' the situation is changed.

well.. there is lot of opinion about that ,but its clear ture

that the song make issue. 

In this situation, IU korean singer wrote apology in her facebook.

However, many people still criticize sharply her.

and some people said "That just one of art. Interpretation for sexual expression

about child is too exaggerated thinking"

How about your think?