The two of them grew up in the same facility when they were young. They got along like real brother and sister, but as they grew up they were separated... They thought they would never see each other again... But they never expected to meet again at a soapland! Rei, who had become a soapland girl, was pretty, cute... and like a little sister to them, but they got a boner. "We could change, but... I'm glad I got to see you again, big brother. We'll always be together." In response to Rei's request, they close the gap with a creampie in this pure love creampie story.