Requiem of the Rose King Manga Volume 15

Requiem of the Rose King manga volume 15 features story and art by Aya Kanno.  

Stunned by how his and Richard’s prospects have changed, Buckingham orders Tyrrell to kill Richard, who may be pregnant, and schemes to win Lord Stanley and the other lords over to his cause. But in exchange for his cooperation, Lord Stanley orders the murder of the two young princes!