It was obiveous that the guy called K gave gisam a wired ceg so he was not the one who comitted the murder .
Also when it comes to suche it was self defense and suche was not a weak guy to just be harrased and not do anything .. also when it comes to protecting his love and trusting his soul .. he protected gusam cause he trusted that those eyes would never kill .. when he was asked by k if he's not bored from this life he simply gave him an answer that going to the olympucs will be fun .. a simple minded guy like that would never commit a murder i guess but K would kill without much of doupt ..
I could not sympathize with these two .. they're still murderers after all .. although the author made it seem that gusam was wrongfully accused but they never expand on the matter ??