Survive as the Villain's Cousin

Reincarnated into the world of a novel, the protagonist makes a startling realization: they are now living as the very culprit responsible for turning his twin cousins into villains within a side story. Burdened by this daunting legacy, a firm resolution is made to raise the twins with genuine affection and prevent their descent into darkness, casting aside the original plot entirely in pursuit of a peaceful bond. However, unexpected complications arise when the second male lead—a character with whom the protagonist should have had no business intersecting—begins showing an intense and growing obsession. Despite all efforts to keep the twins on a righteous path, the situation unravels further as the second male lead himself turns dark. Left to question where things went astray, the protagonist faces a desperate plea from a figure on the edge: a demand to stop retreating because endurance is wearing thin.