My opinion about the last episode

Spoiler episode 16
.
.
.
.
.
.
.
.
.
I really liked this drama, but I feel a little disappointed with the last episode, this character thing sacrificing itself so that the couple has a happy ending irritates me and I know that the rang loves his brother and would do anything to save him but still yet it makes me angry because rang also deserved a happy ending but all in all a good drama with good performances and i can't forget to say i loved the ost so much, is so good e combine verry well with whole drama!!