On their way to Europe, the heroine, the hero and others accidentally traveled to a book written by the male number three and started the journey. After they returned to the real world, the gods came to the world and opened the doors to various worlds and gave the keys to the heroine. From then on, the heroine and others started a journey to different worlds, and each had their own systems. They arrived in various dimensional worlds and began to roam the world.
Intent: Romance