Minami is a girl from a good family who was brought up by parents with serious jobs. She goes to cram school every day and struggles to make a Mirai that meets her parents' expectations, but humans are not cyborgs. People don't grow up the way their parents want them to. What she has nurtured in Kokoro is an overwhelming interest in cocks. When she gets stressed out from studying, she searches for men on an app and offers her raw vagina to them with her pocket money. What else can you call this but a stain on her life? Well, I'm lucky, so I'll let you cum inside me.