Confinement by My Yandere Imouto is a gripping Japanese web novel that delves into the dark world of obsession and captivity. The story follows a seemingly innocent imouto who turns out to be a yandere, leading to a harrowing tale of confinement and twisted love. With themes of horror, romance, and slice of life, this novel explores complex relationships and the darker side of human nature, making it a compelling read for fans of harem and psychological thrillers.