Ryouichi has no job. But one day, he wins a lot of money by lottery. When he walks along the road happily, he meets a fortuneteller. She looks hungry, so he gives her something to eat. Her name is R and puts out some cards.
"Will you tell my fortune?"
"No, I'll decide your future."
"What?"
"I'll show you my power... You'll have sex with a girl you still don't know tomorrow..."
"What are you talking about...?"
Though he doesn't believe it, a girl comes to his place on the next day and they actually have sex. Ryouichi soon meets R.