Summary: Give Birth to a Child, but Refuse to Be a Spoiled Wife

It's a story about an 'ordinary girl' who wakes up and ends up in a bizarre and suspiciously future world. She accepts an invitation from the world's official force, the 'Travel Bureau', and accepts a time-travel mission in which she can only carry three kilograms of items and survive in three worlds for ten years without any other gold fingers. After successfully completing the mission and returning, according to her strange characteristic of leaving offspring in every world, she is assigned to a gold finger called the "childbirth system" to live in each world.