Menhera Shoujo Kurumi-chan.

To the outside world, Nanase Kurumi appears to be the perfect older sister. She is beautiful, endlessly cheerful, radiantly bright, and deeply devoted to her home life. However, this flawless facade conceals a much darker reality. Beneath her warm smile lies a young woman struggling with severe mental instability, hiding a fragile and unpredictable nature that contradicts everything she projects to those around her. The story follows her younger brother, Taichi, who finds himself constantly caught in the turbulent wake of his sister’s erratic behavior. Rather than living a normal life, he is perpetually manipulated and dragged along by Nanase Kurumi's shifting emotions and overwhelming demands. Bound by family ties and unable to escape her intense grip, Taichi must navigate the exhausting daily challenges of living with someone whose affection is as suffocating as it is volatile. Menhera Shoujo Kurumi-chan explores the complex and often distressing dynamic between these two siblings. As Taichi struggles to maintain his own sense of stability while being tossed around by his sister's psychological turmoil, the narrative delves into the hidden difficulties of loving someone whose mind is at war with itself. It is a compelling look at devotion, manipulation, and the heavy burden of familial bonds pushed to their breaking point.