Going It Alone in the Apocalypse

A woman with outrageously powerful abilities transmigrates into an apocalypse novel, but the plot doesn't seem to be unfolding the way she remembers. With a transmigrated heroine, a reborn supporting character, and herself, a lone wolf, the novel has been changed beyond recognition. Still, it's pretty entertaining.

A story about a cold-looking, absurdly powerful woman who watches the transmigrated heroine and the reborn supporting character fight, makes snarky comments to herself, works hard to level up, and roams the apocalypse alone. The heroine's abilities are absurdly powerful: barriers, spatial powers, and corrosion.