Super juniors mysterious Opera album cover?

Super Junior announced that they will release their 3rd Japanese single "Opera" on May 9.
Following the PV teaser which was first revealed in "Oppa Oppa" event, the album covers are
stirring attention.Having masquerade masks and dark outfits, the boys are covering the concept of
Phantom of Opera.
On the album cover, the boys are surrounded with jigsaw puzzle pieces that added mystery to the
concept.

What would it be?
Source :allkpop

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