In 1383, the first "worm" appeared on the El continent. "Insects" control humans by creating dreams, making them their own breeding host, absorbing the nutrients in their bodies until the host dies. People call it "if".
In the year 1384 of El Continent, the first "Nymph Crusade Team" was established. Subsequently, a large number of bounty hunters appeared, and humans began to fight back against the nymphs.
The chaotic "if era" begins...