Question: how old are yuki and kaname?
Answer: As a vampire he ages slowly; when he saved Yuki, she was only 5, and he appeared to be about 13. Now he appears about 18 years old after ten years, and Yuki has grown up to be 15 years old. He is very attached to Yuki and often worries and frets over her. He is a progenitor of the Kuran Family, the original vampire.