Bitter Knight in My Sweet Café

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!