so I've been proven wrong, OK....
is ranged attack non-existent in this city or anyhting? if this Gary chief intend to make his authority known by dealing with Yajin in close quarter himself, he already undermined that by letting Yajin go after "peacefully resolved" the matter few chapter back (Paul-Yajin duel). if a ruler want to strengthen their grip, going against their own rules is one of the best way to weaken it instead. if Yajin is too much of an eyesore to be left alive, then use assassinations (let no one know your face) or RANGED attack.
"hey, this guy is good in melee fights! let's fight him hand-to-hand/melee!". SERIOUSLY!? being cruel is ok, being cruelly dumb isn't.