Quick Transmigration: The Big Shot Pins the Heroine to the Wall with a Kiss

System 003, hunted by its own kind, is bound to a woman of unknown origins. To stay alive and gather enough strength to return and take revenge, poor 003 begins its miserable life watching its Host's every mood. As they spend more time together, it realizes that the Host's temperament is as unpredictable as the weather, and doesn't seem to be caused by the client's influence. 003 says: “People like this are the hardest to serve! And, hey, dear Host, why do you keep fixating on the female lead of every world?”

As time passes and more missions are completed across different worlds, certain things naturally begin to come to light.