Tsumi ni Nureta Futari

Reeling from a devastating breakup, nineteen-year-old college student Kasumi travels to Italy seeking solace and distance from her pain. While wandering the historic streets of Rome, she crosses paths with a striking Japanese stranger. Knowing absolutely nothing about him—not even his name—she surrenders to the moment and shares a fleeting, passionate one-night stand. It was meant to be a brief escape, an anonymous encounter left behind in a foreign country with no possibility of them ever crossing paths again. However, upon returning home to Japan, Kasumi discovers that fate has orchestrated a cruel and shocking twist. The mysterious man from Rome is none other than Yoshiki, her own younger brother. What began as an impulsive attempt to mend a broken heart quickly spirals into a deeply taboo entanglement. Bound by blood yet tethered to a forbidden secret, the two siblings are thrust into an agonizing dilemma where guilt and desire collide, marking only the beginning of their tragic and complicated story.