The twin sisters of Miyanishi families are so beautiful that they have a reputation in the neighborhood, but when they go behind the scenes, they get a lot of love and hate...! And finally, the unexpected true nature of the sister, who was a pure lady, is revealed!!

His older sister Hikaru is quiet and shy. Her younger sister, Runa, is a public, slutty and sociable. They're twins, so different personalities. Hikaru's desire is popular influencer Kouki. Runa is a sex friend with that Kouki! "I want to be hugged by Kouki!" Hikaru masturbates lonely and fantasy. Hikaru, the older sister, is impersonated as her younger sister after a certain incident. Kouki doesn't realize it's a spoof and ends up confusing it, and then a parallel (?) slurred sex begins!