If this is very unclear and is like impossible to identify without further description, Please let me know, All I have is one episode I saw on TV of it(on Animax).
My hope is that someone may recognize the super-power of a character in it.
All of the anime characters had super-powers and the one I was talking about had threads i.e he can release thin threads from his body, and the threads were sharp and they would cut and hurt the enemies.
There was some sort of war going on in that anime.
And at this particular scene on that episode, someone was badly injured and another had to feed the medicine using mouth
I am unable to remember the gender of the characters. But I believe the one who had thread powers was a guy with long light hair.
Hope these descriptions are enough.