Seven Seas Entertainment A Tale of the Secret Saint (Manga) Vol. 4

"As the knight brigades patrol the forest, a pair of blue dragons has pinned one of the companies, and it's not looking good! When Fia is the target of a deadly attack, Zavilia steps in-and up-revealing his adult black dragon form to protect her. He may have shown their hand, but there's nothing this dragon wouldn't do for his savior."--Provided by publisher.