Reina Matsuoka, a 19-year-old current female college student attending a prestigious national university, returns in her third release! Reina's family consists of her mother, stepfather, and stepbrother—four people in total—who are all involved in lewd relationships, hiding their perverted, deviant side. Reina herself embraces this abnormal lifestyle without hesitation, and her charm is undeniable. The escalating, intimate interactions within her family are the highlight of this release.