処刑フラグの悪役貴族に転生したが、死にたくないので闇魔法を極めてヒロインたちを救います

After reincarnating into the world of a video game, our protagonist realizes he has become Diablo, the most universally despised noble in existence. His impending fate? A gruesome and brutal revenge enacted by the game's very own heroines. Determined to atone for the original Diablo's heinous misdeeds, he resolves to save the women he once wronged. By overcoming harrowing trials and pushing past his absolute limits, he will claim the ultimate power and rewrite his tragic destiny! (Source: Gangan Online, translated)