User blog comment:Crimson and Darkness/Volume 24 discussion blog/@comment-185.112.105.215-20180104155018/@comment-2001:E68:6DD1:900:A898:9A37:AF23:A9FA-20180108024712

Longinus is bascially a SG that has no copies present

For instance blade blacksmith is not a longinus as more than one person can have it at one time (kiba and Jeanne)

But Forbidden Balor View (FBV) with Balor's soul only has one copy, even if there is another person with FBV it will not be same without Balor's soul