In this instance, I'm not sure but I would opt for involuntary manslaughter at worst.
Many times, when a party to the first fight returns it is they who are killed. Junta returned to find Costin maybe to inflick pain, but I doubt death. Be it death was the result. I back for conviction of involuntary manslaughter.
Swedegirl wrote that emotion has to play into this. One must always maintain a level head about himself or regain it very quickly in a situation.
Yes, I have three kids but I do not charge out against others except that pesky kind that gets on my roof at night. One of these nights I'll catch him and scare him but will not harm him.
I am not a Lawyer, but I did sleep in a Holiday Inn once.