Quick Transmigration: Why Is My Stingy Host Collecting Stamps Again?

[Quick Transmigration + Heartless Woman + 1vN + Lovesick Obsession + Multiple Worlds + Maniacal + Obsessive + Tsundere]

Song Zhi is a space-time envoy. Her usual job is supervising quick-transmigration taskers, an easy post if ever there was one. One day, she slacks off at work to play mahjong, shirks her duties, and gets caught by the director of the Space-Time Bureau. As punishment, she is sent to three thousand small worlds to clean up after quick-transmigration taskers who have failed their missions.

She isn't allowed back until the mess is cleaned up! With no other choice, she heads off in tears to pick up the pieces.

World One: Warlord of the Republic of China Era x A Stunning Songstress

World Two: A Princess Forced to Go Mad x A Stable Hand with a Taste for Pain

World Three: Tsundere, Repressed Half-Beast x Goddess of Destruction

World Four: Punishment World

... (Some worlds have infidelity. If that's not your thing, feel free to skip them.)