on death of player:
	add 1 to {kill.%uuid of attacker%}

on first join:
	set {kill.%uuid of player%} to 0

command /stats [<offline player>]:
	trigger:
		if arg 1 is set:
			send "&e%arg 1%のキル数: %{kill.%uuid of arg 1%}%" to player
			stop

command /resetstats [<offline player>]:
	permission: skript.stats.reset
	trigger:
		if arg 1 is set:
			set {kill.%uuid of arg 1%} to 0
			stop
		else:
			send "&c権限がありません" to player