Baku Ane: Otouto Shibocchau zo! The Animation(2014)

Baku Ane: Otouto Shibocchau zo! The Animation is an adult comedy series following Ryoushirou Hayasaki, a young man recovering from a soccer injury at his parents' house while they're abroad. Left in the care of his four older sisters—Yurine, Noemi, Naru, and Mio—his quiet rehabilitation takes a turn when Noemi discovers his collection of erotic comics and love letters from younger classmates. The discovery sparks a family argument that reveals Ryoushirou's attraction to younger women, leaving the household in tension. When the depressed and frustrated Ryoushirou considers leaving, his sister Yurine offers unexpected comfort and assistance with his recovery. What follows is a provocative exploration of family dynamics and forbidden desire as Ryoushirou navigates his complicated feelings and relationships within the household.