My skill won't damage opponent

[Silverthorn]

Adding to what STM said...

DC-Code: <frame> 113 CHIDORI SWORD pic: 22 state: 3005 wait: 2 next: 114 dvx: 0 dvy: 0 dvz: 0 centerx: 190 centery: 149 hit_a: 0 hit_d: 0 hit_j: 0 hit_Fa: 0 itr: kind: 0 x: 61 y: 10 w: 12 h: 44 dvx: 0 dvy: 5 fall: 20 vrest: 10 bdefend: 30 injury: 10 effect: 1 itr_end: itr: kind: 0 x: 61 y: 150009 w: 12 h: 44 dvx: 0 dvy: 5 fall: 20 vrest: 10 bdefend: 30 injury: 10 effect: 1 itr_end: <frame_end>

This second itr looks definitely like it's intended for some special bdy. Not going to hit anybody with that unless you already modified all other characters.

If you are unsure how the x/y/w/h-value are created, check out this page.