The Apocalypse Boss's Revenge

Leah Reid, an apocalypse figure with powers, transmigrates into 1970s novel as cannon fodder. She activates the Pocket Dimension. Facing schemes and grandfather's crisis, she uses powers to punish villains, accumulate wealth. Sent to Black Province with grandfather, she protects national pillars, fights Educated Youth, captures enemy agents. Unlocks identity as Special Intelligence Group member. Stages a counter-attack, protects loved ones, builds career.