This is the Labyrinth City Orario. It possesses the only underground labyrinth in the whole lower world, and thus has prospered from it, coming to be known as the "Center of the World." Ryu Lion, under the owner Mia Grand, workes daily at the pub Hostess of Fertility alongside her coworkers Syr Flover, Anya Fromer, Chloe Lolo, and Runoa Faust. One day, a pair of voices shatters the peace of the store...

This is a fairy tale that won't be written down, the story of Lion!

(Source: MU)