Matsuri Mizuguchi

Haruno Kasumi and Haruno Ayato are related, however kasumi is a girl older than him, one day Ayato declares to him and promises that when he enters the same school as kasumi they will be more united, so they agree to make that happen, shortly after Ayato visits a porn website that was recommended to him, Ayato begins to become addicted to the content of some videos where a girl seems to look just like kasumi, however the situation will take an unexpected turn when discovering the truth behind everything….

Having suffered an injury during a soccer game, Ryoushirou Hayasaki returns to his parents' house to undergo therapy. As both of them are currently abroad, the only ones to welcome him home are his four older sisters—Yurine, Noemi, Naru, and Mio. His laid-back recovery is soon interrupted when Noemi finds her brother's erotic comics and love letters from younger classmates. The sisters soon realize that Ryoushirou has a little sister complex and the family argument that follows leaves the siblings at odds. Depressed and fed-up, Ryoushirou considers leaving the house. However, he gets an unexpected visit by Yurine that night—a short-haired and well-endowed beauty who is willing to help him with his rehabilitation and make up for the other sisters' outburst. Unable to deny himself the guilty pleasure, Ryoushirou decides to make the most of his stay and take advantage of the wonders around him.

Haruno Kasumi and Haruno Ayato are related, however kasumi is a girl older than him, one day Ayato declares to him and promises that when he enters the same school as kasumi they will be more united, so they agree to make that happen, shortly after Ayato visits a porn website that was recommended to him, Ayato begins to become addicted to the content of some videos where a girl seems to look just like kasumi, however the situation will take an unexpected turn when discovering the truth behind everything….

Having suffered an injury during a soccer game, Ryoushirou Hayasaki returns to his parents' house to undergo therapy. As both of them are currently abroad, the only ones to welcome him home are his four older sisters—Yurine, Noemi, Naru, and Mio. His laid-back recovery is soon interrupted when Noemi finds her brother's erotic comics and love letters from younger classmates. The sisters soon realize that Ryoushirou has a little sister complex and the family argument that follows leaves the siblings at odds. Depressed and fed-up, Ryoushirou considers leaving the house. However, he gets an unexpected visit by Yurine that night—a short-haired and well-endowed beauty who is willing to help him with his rehabilitation and make up for the other sisters' outburst. Unable to deny himself the guilty pleasure, Ryoushirou decides to make the most of his stay and take advantage of the wonders around him.