Lytillia is an ordinary girl who works at Café Flora, where cuteness is in full bloom. But among the customers who gather for their love of cute things, there's a peculiar one who only orders black coffee every morning: Arthur Villand, the frightening and ruthless knight commander. And the reason he comes to the cafe is...?! A bittersweet tale of love between an airheaded heroine and a strait-laced but doting knight, is served!