Shintaisou: Shin

There's a secret competition called "dark rhythmic gymnastics". The entrees complete their beauty and lewd by their technique more difficult than rhythmic gymnastics.
Haneoka Fubuki is a little brother-in-low of Haneoka Miku who's been missing. While he is looking for his sister, he finds her at the house of Tomomi, Miku's classmate. Accedi...