Trying to make toggle-able Kaioken... Instead it duplicates... Little Help?

I've been trying to make a gui allowing players to use transformations from Dragon Ball Z and I decided to start by trying to make what should be the simplest, the Kaioken. I have had success in making the toggle button activate the Kaioken's aura... But clicking the button again doesn't remove the aura but rather duplicates it.

Here's the code.

local jun = game.Players.LocalPlayer

script.Parent.MouseButton1Click:connect(function()
    if jun.Character.Torso:findFirstChild("PwnFire") == nil then
        local fr = game.lighting.Kaioken:clone()
        fr.Parent = jun.Character.Torso
    end
    if jun.Character.Torso["Kaioken"].Enabled==true then
        jun.Character.Torso["Kaioken"].Enabled=false
    else
        jun.Character.Torso["Kaioken"].Enabled=true
    end
end)

Im pretty sure line 4 be if jun.Character.Torso:FindFirstChild("Kaioken") == nil then... Since you want to check if the player's torso already has "Kaioken" before cloning one into the torso, I dont know what "PwnFire" is but since you said it keeps duplicating the aura that would be the problem, and i personally would use if not jun.Character.Torso:FindFirstChild("Kaioken") then....