鉱石令嬢〜没落した悪役令嬢が炭鉱で一山当てるまでのお話〜, Koseki Reijo, The Ore Lady The Fallen Villainess Strikes It Rich in the Mines

Isuzu, a passionate mineral researcher, suddenly collapses while working—only to wake up in the world of an otome game as Maheria, the infamous villainess! If events play out like the game, her life is doomed to ruin! Determined to escape her tragic fate, she flees the royal palace and stumbles upon a coal mine, where she meets Abel, the mine’s leader. To earn her place and survive, she proposes a revolutionary idea—introducing coke-based steel production, a technique unheard of in this world! Armed with scientific knowledge and a burning passion for minerals, can she carve out a new destiny for herself?