Tensei gotoki de Nigerareru to demo, Nii-san?

Imprisoned and relentlessly tormented by his deranged younger sister, an exhausted older brother finally tastes freedom the moment he escapes his captivity—only to meet a sudden and tragic end. Yet, death does not bring him the peace he so desperately craved. Instead, his soul is thrust into a sprawling new realm through reincarnation, offering him a fresh start far away from his past nightmare. Believing he has successfully escaped the clutches of his familial tormentor once and for all, he begins to navigate his unfamiliar surroundings with cautious optimism. However, this hard-earned tranquility is shattered when he discovers a terrifying truth: his demonic sister has followed him across the boundary of death, reincarnating into the exact same world. Trapped once again in a tense game of cat and mouse, he must outmaneuver the very sibling he died trying to leave behind.