Requiem of the Rose King

is a shojo manga by Aya Kanno. It has been serialized in Akita Shoten's Princess manga magazine since November 2013. Viz Media has licensed it for English release.

Plot
As England is torn between the houses of York and Lancaster, young Prince Richard III believes that he is cursed. But is it fate or his own tormented longing that set him on the path to his own destruction?

Official
Official English manga site