Reincarnated into a Villainous Family, But I'm Ignoring the Plot and Going Rogue!

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Reincarnated into a Villainous Family, But I'm Ignoring the Plot and Going Rogue! summary: The protagonist, who has been reincarnated into the world of a game he played extensively, has become Yuri, the third son of a villainous family!! His father, siblings, and the entire household are the worst and most ruthless, all doomed to be brutally massacred. As for Yuri himself, he is destined to betray the Hero as the final boss, dragging the heroine down with him to meet the worst possible death. Not wanting to die, he decides to completely distance himself from both his villainous family and the Hero’s party, intending to live a peaceful and carefree life… Or so he thought, but now, one by one, the original story’s characters keep gathering around him…!? From a self-declared "exile", the lone Final Boss’s journey of independence and unrivaled strength begins!!! Alternative Raw: (https://manga.nicovideo.jp/comic/71281)