简介：Acomedystarringsexyactressunit"3boins"thatgatherpopularityofmaturegirlfriends.Oneheart-warmingonewherethreepersons"personalitywasdemonstratedfromthethreesisters"setinalonelyhot-springinnryokan,includingastandardbathingscene,aimingforreconstructionandencouragingexcessiveservice.TheseconddaughterMayumi(Kayama)returnedhomeforthefirsttimein20yearswhentheryokanwhobrokeupwithhereldestdaughterJunko(Iori)andthreewomen·Rie(Orihara)fallsintoaslumpinmanagementaftersucceedingparentswhopassedawayWhileawkwardairflowsbetweenthethreesisterswhohavearranged,amaleguestwithamomentumcomesandariotoccurs.