Found this script that shoots a projectile but its gets more tilted based on how high its fired please help

script.Parent.OnServerEvent:Connect(function(plr,direction,mouseaim)
	local hrp = plr.Character:WaitForChild("HumanoidRootPart")
	local Slash = game.ReplicatedStorage.Yoru.YoruX:Clone()
	Slash.Parent = workspace
	Slash.CanCollide = false
	Slash.Anchored = false
	Slash.CFrame = CFrame.new(hrp.CFrame.p,direction.p) --direction is mouse.hit.p
	Slash.Orientation = Slash.Orientation + Vector3.new(0,-90,0)
	Slash.Touched:Connect(function(hit)
		if hit.Parent:FindFirstChild("Humanoid") and hit.Parent.Name ~= plr.Name then
			if not hit.Parent.Humanoid:FindFirstChild(plr.Name) then
				local Damage = math.random(40)
				hit.Parent.Humanoid:LoadAnimation(script.HitDamage):Play()
				hit.Parent.Humanoid:TakeDamage(Damage)
		    end
		end
	end)
	local BV = Instance.new("BodyVelocity",Slash)
	BV.MaxForce = Vector3.new(math.huge,math.huge,math.huge)
	BV.Velocity = CFrame.new(hrp.Position,mouseaim).LookVector * 125
	wait(1.2)
	for i = 1,10 do
		wait(0.1)
		Slash.Transparency = Slash.Transparency + 0.015
	end
	wait(100)
	Slash:Destroy()
end)
Anonymous