"Kekkai Sensen: Ousama no Restaurant no Ousama" takes us on a thrilling adventure as the members of Libra step out of the shadows to accompany a very important guest for a special dining experience. This guest happens to be the heir to the throne of his kingdom, and their mission is to showcase the finest cuisine that Hellsalem's Lot has to offer. In order to accomplish this, the group decides to indulge in a meal at Molzzogazza - one of the city's top restaurants known for its delectable ice cream flavors.