Board Thread:Questions and Answers/@comment-34111418-20180830163517

Do we know who are the Gakupo and Luka characters on the picture ? This announcement was made a while back now, and since the Greed, Wrath, and Heavenly novel are out now, this region of time is much more known that before, so I was wondering, do we know anything new about those characters ? 
 * "In an interview, mothy confirmed that the Luka character portrayed on the back of the album's cover is the embodied form of a Demon of Sin; in addition, he also confirmed the Gackpo character portrayed was not the Gardener.[1]"