Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
If you control no monsters: Reveal up to 2 "Yosenju" monsters with different names in your hand, then target the same number of face-up cards your opponent controls; return them to the hand. You can only activate 1 "Yosenjus' Sword Sting" per turn.
--妖仙獣の居太刀風
--Yosenjus' Sword Sting
--Scripted by Eerie Code
local s,id=GetID()
function s.initial_effect(c)
	--
	local e1=Effect.CreateEffect(c)
	e1:SetCategory(CATEGORY_TOHAND)
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetProperty(EFFECT_FLAG_CARD_TARGET)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetHintTiming(0,TIMINGS_CHECK_MONSTER|TIMING_END_PHASE)
	e1:SetCondition(s.condition)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
s.listed_series={SET_YOSENJU}
function s.condition(e,tp,eg,ep,ev,re,r,rp)
	return Duel.GetFieldGroupCount(tp,LOCATION_MZONE,0)==0
end
function s.cfilter(c)
	return c:IsSetCard(SET_YOSENJU) and c:IsMonster() and not c:IsPublic()
end
function s.filter(c,e)
	return c:IsFaceup() and c:IsAbleToHand() and c:IsCanBeEffectTarget(e)
end
function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
	e:SetLabel(100)
	return true
end
function s.rescon(sg,e,tp,mg)
	return sg:GetClassCount(Card.GetCode)==#sg and Duel.IsExistingTarget(aux.FaceupFilter(Card.IsAbleToHand),tp,0,LOCATION_ONFIELD,#sg,nil)
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsControler(tp) and chkc:IsOnField() and aux.FaceupFilter(Card.IsAbleToHand)(chkc) end
	local g=Duel.GetMatchingGroup(s.cfilter,tp,LOCATION_HAND,0,nil)
	if chk==0 then 
		return aux.SelectUnselectGroup(g,e,tp,1,2,s.rescon,0)
	end
	local sg=aux.SelectUnselectGroup(g,e,tp,1,2,s.rescon,1,tp,HINTMSG_CONFIRM)
	Duel.ConfirmCards(1-tp,sg)
	Duel.ShuffleHand(tp)
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_RTOHAND)
	local rg=Duel.SelectTarget(tp,aux.FaceupFilter(Card.IsAbleToHand),tp,0,LOCATION_ONFIELD,#sg,#sg,nil)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,rg,#rg,0,0)
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	local g=Duel.GetTargetCards(e)
	if #g>0 then
		Duel.SendtoHand(g,nil,REASON_EFFECT)
	end
end