Mirrorcle World (DoY) Version cover

[Milox]

Quick question!

My Mirrorcle World singles have arrived today, and I noticed that my Depend on You first press edition cover, has this small green mark on the left side (near ayu's cheek), then I opened it and took out the cd and dvd. Both have the same small green mark, then i unrolled the poster of the same cover, and it also has the green mark! hahaha

Thing is, it looks like a crayon mark, but i find it weird that everything with that cover has the exact same mark.

Anyone's else version have this?