The Undying Sorrow skin is an Rare Fortnite outfit. Undying Sorrow was available via the Item Shop for 1200 V-Bucks and you can buy it from Fortnite Item Shop when it will listed.
Fortnite Undying Sorrow Skin Details
Sleep no more.
Fortnite Undying Sorrow Skin PNG Images
Here is the PNG images of Undying Sorrow below!