Luka is your picture-perfect vampire—he's handsome, he's regal... He's also usually incredibly hungover and exhausted, and wants nothing more than a change of pace from his routine! When he takes a peek into the human world, he finds just the cure he's looking for—a relaxing bathhouse that will surely cure him of his hangover and rejuvenate him from head to toe. To blow his fatigue out of the water, Luka pays a visit to Mangetsu no Yu bathhouse where he meets the bathhouse's eldest son, Sakura. But between the bathhouse being short-staffed and taking care of his little brother, Sakura has enough to worry about without a bougie vampire being added to the mix!