Item type (Hair/Face/NX Item/Pet): Hats (NOT HAIR but hairpieces apparently)
Item name (English/Korean): Moonlit Night Hair/ 밤의 시엘, Dark Moonlit Hair 밤의 백야
Website link (where the item was seen, including previous cash shop rotation link): KMST Ver.1.2.057+, KMS 8th and 9th Master Labels
Image of item:
(Moonlit Night Hair/ 밤의 시엘)
(Dark Moonlit Hair 밤의 백야)
These two appearance cash items, but not only limited to two, are free rewards from KMS Master Label quests. Once equipping the Moonlit Hair (hair item) or other related Master Label hairs, it gives a Master Label quest that rewards with these hairpiece items that you can wear to cover your hair. I have noticed that only these reward items never came to GMS even though, all other items from the KMS Master Label series were available.