The protagonist continues living with his two older sisters Ayami pure gentle one and Megumi tanned slutty one during summer vacation. The non-stop sex escalates as both sisters use his body relentlessly deepthroating, paizuri with their huge tits, missionary, doggystyle, and group play until he floods them with overflowing creampies in multiple rounds, ending with all three exhausted and covered in cum while the sisters tease that summer is long and they'll milk him every day