Baku Ane: Otouto Shibocchau zo! The Animation (2014)
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.
Country: JP
Language: Ja
Runtime: 35
Season 1:
A soccer player returns to his parents’ house after training in another city for a few months and getting injured in the process. Luckily, he has four older sisters waiting for him back home, aching to bring him back to full form however they can!
Our protagonist, Takesaka Munetaka, fails the first time he tries having sex with his lover due to trauma he experienced in the past. His sister Ritsuka and his cousin Momotani Mashiro literally put their bodies on the line to give him "sex lessons" and help him recover from his trauma. However, his other sister, Wakana, who gave him his trauma in the first place, joins the fray and the lessons become more than just lessons! Here begins the sisters' war over their little brother!!