It's for all the fans of either DBSK or Super Junior, or both!

Super Junior
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S = 19 = 1+9 = 10 = 1+0 = 1
U = 21 = 2+1 = 3
P = 16 = 1+6 = 7
E = 5 = 5
R = 18 = 1+8 = 9

J = 10 = 1+0 = 1
U = 21 = 2+1 = 3
N = 14 = 1+4 = 5
I = 9 = 9
O = 15 = 1+5 = 6
R = 18 = 1+8 = 9
Super Junior = 1+3+7+5+9+1+3+5+9+6+9 = 58
5+8 = 13
Super Junior = 13...only