Vampire Knight: Memories is a free sequel to the events depicted in original VK manga. After Kaname´s wake up, Yuuki´s children tell him about what everything has changed since his own death. The manga is notably different from the original not only because it finally focuses on developing the relationship between Zero and Yuuki, but also because of new characters and reccurence of the old one (Maria, Yori, Hanabusa etc.).
The art is outstanding, very pleasant and clean. There doesn´t seem some big plot evolving so far, so it´s unsure what will the story bring in the future. But overall I like this manga very much and for me it counts as solid 9/10.