Profane Jiangshi Mask "Secret" (Gon's version) Drop Rate

[Velvetine]

Hi, I am somewhat new to BnS and I am sorry if I posted in the wrong section but is the Profane Jiangshi Mask called "Profane Jiangshi Secret" mask for male gon really very hard to attain? I am at 300+ essense and not one did not drop the "mask" only the horn adornment. Now am I just unlucky or does the mask have a smaller percentage because all adornment I've got is the horn.

 

 

PS: Oh yeah I am using my Gon "Destro" for all those runs