The Guardian of the Devils

The job of babysitting monsters… is that of the “Guardian of the Devils”! A hundred years ago, a giant dragon suddenly appeared and swallowed the entire country. People started to adventure inside the dragon's body to find treasure, but some adventurers got stuck inside and couldn't return to the surface. One of them, Ariaris, was taken in by Lumon, who runs a daycare business. She helps Lumon with his job taking care of the monster children… New monster-child-rearing × fantasy!