Seduce your little brother with a panty flash, and if you can have incestuous sex, you'll get ¥1,000,000! We approached female college students on the street to participate in a prank on their little brothers! In a model room somewhere in Tokyo, the two of them were alone until midnight! The brother, who doesn't know the true content of the plan, gets highly excited by his sister's repeated panty flashes. Will this sister and brother end up committing incest?
