A privaleged, naive young man
Even with the rather intimidating clothes, Yuuri is a light-hearted boy. He enjoys being around his friends and isn't afraid to smile.
However, his innocence is also ignorance to a certain degree. He has lived a sheltered life, and knows not of the darker aspects of the world to their full extent.
Usually Yuuri is ready to be a host to a party or dinner that his parents are unable to attend, without any questions or arguments. He likes helping out around the grounds, well, when his parents aren't looking, and has developed a liking for cooking over the years.
Since he is of a wealthy family, he has no need for any 'equipment' ,as such. He does have a butler, Sebastien, who can get what Yuuri wants, however.
Yuuri's parents worked for their money. However, they were determined that their offspring need never to work in their lives. His parents also want their son to earn what it is like to live in the higher-class family, therefore making him host parties and dinners in their place, which Yuuri enjoys very much.
This unusual kind of constant performing before guests, though, is not Yuuri's passion. Over the years, he has snuck away and befriended the head cook, Chef, and has developed a love for cooking.