Discover Japan's stories—across time, across language.

| Original Title | 黒い手帳 |
|---|---|
| Author | 久生 十蘭 |
| Genre | Modern Short Fiction |
| Author Type | Male Author |
| Summary | In a dim Parisian boarding house, three lives intertwine around a leather-bound notebook filled with cryptic formulas. A reclusive researcher, consumed by a decade-long quest to crack roulette’s code, guards his discoveries with manic intensity. Below him, a destitute couple—charm masking desperation—scheme to seize his work, their survival hinging on gambling’s elusive promises. Between them drifts an unnamed observer, drawn into their orbit as witness and reluctant participant. \nThe notebook’s pages pulse with delusion and genius, promising infinite wealth yet stained by tragedy. As financial ruin tightens its grip, alliances fracture: tender gestures blur with manipulation, caregiving masks darker intentions, and a fatal dance of arsenic and cyanide looms. The researcher’s crumbling health mirrors his disintegrating sanity, while the couple’s fragile morality buckles under hunger’s relentless pressure. \nThrough stairwell encounters and poisoned invitations, destinies collide—obsession battles pragmatism, love wars with exploitation. Yet beneath calculated gambits thrums raw humanity: trembling hands nursing a rival, whispered confessions in shadowed rooms, and the haunting question of whether redemption lies in survival or surrender. \nAs winter grips Paris, each player edges toward an abyss where fortune favors neither logic nor virtue—only the ruthless calculus of chance. |