Busty Big Sisters Wringing Little Brother Dry! - The Animation (Director's Cut)

■Story
Noemi, the oldest sister, is a beautiful doctor who all men find attractive.
Yurine, the second oldest, is a popular gravure idol in her prime.
Mio, the third oldest, is a chill, sexy college girl.
Naru, the fourth oldest, is a flat-chested cutie with glasses.

These are the four older sisters of Ryoushirou Hayasaki, a top-class soccer player who was once selected to be Japan's representative in the international youth league.
He sustained a major leg injury in a match and has come home to rehabilitate.
The sisters he'd drifted apart from give him a warm welcome home.
As he begins his slow recovery, a prank by his teammates triggers a sudden change in his sisters.
It turns out that his older sisters all had feelings for Ryoushirou that went beyond the love for a younger brother!
Among the four of them, Yurine's and Mio's feelings were especially intense, causing them to do something unthinkable...

Using rehabilitation as a ruse, these two sisters begin trying to seduce Ryoushirou in an erotic competition!